Free Tools

Nutrition & Fitness Calculators

Free tools to help you calculate calories, macros, and plan your nutrition. Use our calculators to reach your health and fitness goals.

AI Body Fat Photo Estimator

Upload a physique photo and get an AI-estimated body fat percentage with muscle group assessment — no calipers or DEXA needed.

AI Contest Prep Planner

Enter competition date, current body fat, and target to get a multi-phase prep timeline with weekly calorie adjustments and peak week protocol.

Wedding Body Countdown Calculator

Input wedding date, current weight, and goal to get a phased nutrition plan with weekly milestones and deficit tapering as the date approaches.

Recovery Readiness Score Calculator

Calculate training readiness from resting heart rate, sleep hours, soreness rating, stress level, and previous training load.

Sleep Debt Calculator

Track accumulated sleep deficit over a week and estimate recovery time needed to return to cognitive and physical baseline.

Sleep Cycle Calculator

Calculate optimal bedtimes or wake-up times based on 90-minute sleep cycles to avoid waking mid-cycle and feeling groggy.

5/3/1 Program Calculator

Calculate weights for all four weeks of Jim Wendler's 5/3/1 program across squat, bench press, deadlift, and overhead press.

Bench Press 1RM Calculator

Estimate bench press one-rep max from submaximal lifts using Epley, Brzycki, and Lombardi formulas with side-by-side comparison.

AI Rock Climbing Nutrition Planner

Enter your climbing style, session volume, and grade to get a nutrition plan with collagen + vitamin C guidance for tendon health.

AI Hyrox Nutrition Planner

Describe your Hyrox training split and race goals to get a periodized nutrition plan optimized for hybrid endurance and functional fitness.

Running Split Calculator

Plan even or negative splits for any race distance with a customizable pacing strategy, wall-hitting risk, and per-mile/km targets.

Training Pace Calculator

Calculate optimal training paces (easy, tempo, interval, repetition) from a recent race result using Daniels' VDOT tables.

AI Gut Microbiome Diet Scorer

Describe your typical daily diet and get a gut microbiome health score using the DI-GM framework with personalized diversity recommendations.

Autophagy Fasting Timer

Estimate when your body enters each fasting metabolic state — glycogen depletion, ketosis, autophagy initiation, and peak autophagy — personalized by body fat %, last meal type, activity level during fast, and fasting experience. Includes a live countdown to your next milestone.

Fasting Electrolyte Calculator

Calculate sodium, potassium, and magnesium supplementation needs during extended fasts (24h+). Enter body weight, fast duration, activity level, climate, and keto-adaptation status for daily targets and a practical morning/midday/evening dosing schedule.

Extended Fasting Timeline Calculator

Enter your fasting start time and body stats to see an hour-by-hour metabolic timeline: glycogen depletion (~12h), ketosis (~18h), autophagy (~48h), and stem cell regeneration (~72h+).

Protein Leverage Calculator

Calculate your protein leverage ratio — see how your current protein percentage drives total calorie intake and what target protein % would naturally reduce overeating based on the Simpson & Raubenheimer protein leverage hypothesis.

Seed Cycling Calculator

Get your daily seed protocol based on your cycle day. Enter your cycle length and current day to see which seeds to eat (flax/pumpkin or sesame/sunflower), portion sizes, nutritional benefits, and a full-cycle phase calendar.

Menopause Nutrition Calculator

Calculate adjusted calorie, protein, calcium, and vitamin D needs for perimenopause and menopause. Includes muscle preservation targets, bone health micronutrients, phytoestrogen food sources, and a supplement checklist.

PCOS Macro Calculator

Calculate carb-controlled, anti-inflammatory macro splits tailored for PCOS. Factors in insulin resistance severity and activity level to give you personalized daily calorie, protein, carb, and fat targets.

Cycle Sync Nutrition Calculator

Get phase-specific macro targets, food recommendations, and seed cycling guidance based on your menstrual cycle day or phase (menstrual, follicular, ovulatory, luteal).

Calories Burned by Heart Rate Calculator

Estimate calories burned using your actual heart rate data from your workout — more accurate than generic MET values. Uses the validated Keytel et al. formula with VO2 max.

Max Heart Rate Calculator

Estimate your maximum heart rate using 5 validated formulas (Fox, Tanaka, Gulati, Gellish, Fairbarn) side-by-side and get personalized 5-zone training ranges.

Fat Burning Zone Calculator

Calculate the exact heart rate range where your body maximizes fat oxidation during exercise, based on age, resting HR, and fitness level.

Fitness Level Benchmark Calculator

Input performance on common tests (push-ups, pull-ups, plank hold, mile time) and get an overall fitness score with percentile rankings by age and gender.

NEAT Calculator

Calculate calories burned from daily non-exercise movement — standing desk, walking pad, fidgeting, chores — and see how boosting NEAT impacts your total daily energy expenditure.

TDEE Calculator

Calculate your Total Daily Energy Expenditure to know how many calories you burn daily.

TDEE Calculator with Steps

Calculate your TDEE and see exactly how each step of the formula works with full explanations.

Macro Calculator

Calculate your optimal protein, carbs, and fat intake based on your goals.

Carnivore TDEE Calculator

Calculate your TDEE and macros optimized for a carnivore or all-meat diet lifestyle.

Animal-Based Diet Calculator

Calculate macros for the animal-based diet (meat, organs, fruit, honey, raw dairy). Get daily targets, weekly organ meat schedule, and a seed-oil-free food template.

Calorie Deficit Calculator

Calculate how many calories you need to eat to lose weight at your desired rate.

Custom Coffee Calorie Calculator

Build any coffee drink step by step — base, milk, sweetener, and extras — for exact calories and caffeine.

BMI Calculator

Calculate your Body Mass Index and see where you fall on the healthy weight scale.

Body Adiposity Index (BAI) Calculator

Estimate body fat percentage using hip circumference and height — no scale needed. Useful when weight measurement is unavailable or unreliable.

Protein Intake Calculator

Calculate how much protein you need daily based on your weight, activity, and goals.

Keto Macro Calculator

Calculate your optimal fat, protein, and carb intake for a ketogenic diet.

PSMF Calculator

Calculate extreme-deficit macros for a Protein-Sparing Modified Fast. Get your daily protein target, minimal fat/carb allowances, total calories, and exact food portions for lean protein sources based on your lean body mass.

AI Meal Analyzer

Describe any meal in natural language and get instant nutritional analysis powered by AI.

AI Recipe Nutrition Calculator

Paste your recipe ingredients and get a complete nutritional breakdown per serving.

AI Meal Plan Generator

Generate personalized 7-day meal plans with grocery lists based on your goals and preferences.

AI Restaurant Menu Analyzer

Paste any restaurant menu and get the healthiest options ranked for your diet goals.

AI Food Comparison Tool

Compare 2-4 foods or meals side-by-side to see which is healthier for your goals.

Intermittent Fasting Calculator

Plan your eating and fasting windows with visual schedules for any IF protocol.

OMAD Calculator

Calculate your total calorie, macro, and micronutrient targets for One Meal a Day. Get a structured meal template, eating window, and nutrient density checklist.

Calorie Calculator

Calculate how many calories you need per day based on your age, gender, weight, and activity level.

BMR Calculator

Calculate your Basal Metabolic Rate - the calories your body burns at complete rest.

Body Fat Calculator

Estimate your body fat percentage using the Navy Method with simple body measurements.

Ideal Weight Calculator

Find your ideal weight range based on your height, gender, and frame size using multiple formulas.

Water Intake Calculator

Calculate how much water you should drink daily based on your weight, activity, and climate.

Cheat Meal Calculator

Calculate how many extra calories you can enjoy on cheat days while still hitting your weekly goals.

Weight Loss Timeline Calculator

See how long it will take to reach your goal weight with projected milestones and required calorie targets.

Bulking & Cutting Calculator

Get precise calorie and macro targets for your bulk or cut phase with training and rest day splits.

AI Grocery List Generator

Generate smart shopping lists from meal plans or nutrition goals, organized by store section.

AI What Should I Eat

Get personalized meal suggestions based on your remaining calories and macros for the day.

AI Diet Compatibility Checker

Check if any food or meal is compatible with keto, vegan, paleo, gluten-free, and other diets.

AI Meal Photo Estimator

Upload a photo of your meal and get instant AI-powered calorie and macro estimates.

AI Cheat Day Analyzer

Describe your cheat day and get a calorie reality check with an encouraging recovery plan.

AI Meal Prep Optimizer

Get an optimized meal prep plan with cooking schedule, portions, and shopping list.

AI Food Swap Suggester

Find healthier alternatives to your favorite foods with calorie savings and satisfaction ratings.

Fat Free Mass Index Calculator

Calculate your FFMI to measure how muscular you are relative to your height. See where you stand compared to natural and elite athletes.

Daily Fat Intake Calculator

Calculate how many grams of fat you should eat per day based on your age, weight, goals, and activity level.

Carb Cycling Calculator

Calculate daily macros for high-carb, moderate-carb, and low-carb days with a personalized 7-day cycling plan.

Reverse Dieting Calculator

Gradually increase calories after a diet to minimize fat regain with a week-by-week macro progression plan.

Body Recomposition Calculator

Get separate training-day and rest-day calorie and macro targets to lose fat and build muscle simultaneously.

One Rep Max Calculator

Estimate your one-rep max for any lift using multiple proven formulas with training zone percentages.

Lean Body Mass Calculator

Calculate your lean body mass using the Boer, James, and Hume formulas to understand your body composition.

Waist-to-Hip Ratio Calculator

Calculate your waist-to-hip ratio and assess health risk levels based on WHO guidelines.

Waist-to-Height Ratio Calculator

Calculate your waist-to-height ratio (WHtR) and assess cardiovascular disease risk using the research-backed 0.5 rule.

Calories Burned Calculator

Estimate calories burned for 100+ exercises and activities using validated MET values.

Macro Timing Calculator

Optimize your pre-workout and post-workout nutrition with personalized macro timing around training windows.

Vegan Protein Calculator

Calculate adjusted protein needs for plant-based diets with PDCAAS corrections and optimal food source pairings.

Creatine Intake Calculator

Calculate your optimal daily creatine dose based on body weight, training phase, and fitness goals.

Caffeine Intake Calculator

Calculate your safe daily caffeine limit based on body weight and sensitivity, with timing and sleep guidance.

Fiber Intake Calculator

Calculate how many grams of fiber you need daily based on your age, gender, and dietary goals.

Daily Sugar Intake Calculator

Calculate your recommended daily sugar limit based on WHO and AHA guidelines for your calorie needs.

Sodium Intake Calculator

Calculate your optimal daily sodium intake based on activity level, goals, and health guidelines.

Glycemic Load Calculator

Calculate the glycemic load of foods and meals to manage blood sugar and make smarter carb choices.

Mediterranean Diet Calculator

Calculate your optimal calories and macros for a Mediterranean diet with daily food group serving targets.

Paleo Diet Calculator

Calculate your calorie and macro targets optimized for a paleo diet with whole-food serving recommendations.

Zone Diet Calculator

Calculate your Zone diet blocks and macros using the 40/30/30 carb-protein-fat ratio system.

High Protein Diet Calculator

Calculate elevated protein targets and macros for muscle building, fat loss, or athletic performance.

Low Carb Diet Calculator

Calculate your macros for a moderate low-carb diet with customizable carb levels from 50-150g per day.

Wilks Score Calculator

Calculate your Wilks score from your powerlifting total and body weight to compare strength across weight classes.

DOTS Score Calculator

Calculate the modern DOTS coefficient used by IPF federations to rank powerlifters across different body weights.

VO2 Max Estimator

Estimate your VO2 max from a recent race time or Cooper test result and see your cardiovascular fitness percentile.

Marathon Fueling Calculator

Calculate carb-loading schedule, race-day gel timing, and calorie targets for marathon distances from 5K through ultra.

Mediterranean Diet Score Calculator

Score your weekly eating habits on a 0-14 point Mediterranean Diet Adherence scale with improvement suggestions.

Metabolic Age Calculator

Estimate your metabolic age by comparing your BMR to age-group averages — see if your metabolism is younger or older than you.

Sweat Rate Calculator

Estimate your personal sweat rate from pre/post exercise weight and fluid intake to dial in hydration during training.

Running Pace & Calorie Calculator

Calculate pace per mile/km, split times, and total calories burned for any running distance and terrain.

Alcohol Calorie Calculator

Calculate total calories, carbs, and sugar from any alcoholic drink by type, size, and mixer — with weekly impact analysis.

Body Roundness Index Calculator

Calculate your BRI from waist circumference and height to assess cardiometabolic risk — a newer metric that predicts health risks better than BMI.

Calorie Surplus Calculator

Calculate the optimal calorie surplus for lean bulking (200-500 kcal above TDEE) with projected weekly weight gain rates.

AI Food Label Analyzer

Paste or describe a nutrition label and get a plain-English health verdict with ingredient red flags and better alternatives.

AI Ingredient Decoder

Paste an ingredient list and get every additive, preservative, and chemical explained in simple terms with safety ratings.

AI Allergy & Sensitivity Checker

Describe a meal or paste ingredients to check for common allergens with hidden sources flagged and safe alternatives.

AI Smoothie Builder

Describe your nutrition goals and flavor preferences to get a custom smoothie recipe with exact macros and ingredients.

AI Fast Food Macro Finder

Name any fast food chain and your macro targets, and get the best menu combinations that hit your numbers.

AI Leftover Meal Suggester

List your fridge leftovers and get creative, nutritionally balanced meal ideas to reduce food waste.

AI Budget Meal Planner

Enter your weekly food budget and nutrition goals to get a cost-optimized meal plan with grocery list and per-meal cost breakdown.

AI Plateau Breaker Advisor

Describe your current diet, training, and weight loss stall to get personalized strategies for breaking through plateaus.

AI Cultural Cuisine Nutrition Guide

Name any cultural dish from any cuisine and get a complete nutritional breakdown with traditional preparation context.

AI Post-Workout Meal Builder

Describe your workout and get an optimal post-workout meal suggestion with exact macro breakdown and timing advice.

ABSI Calculator

Calculate your A Body Shape Index to assess mortality risk based on waist circumference adjusted for BMI and height.

Zone Diet Block Calculator

Calculate your daily Zone Diet blocks based on lean body mass and activity, with meal block distributions.

Skinfold Body Fat Calculator

Estimate body fat percentage from 3-site or 7-site skinfold caliper measurements using Jackson-Pollock equations.

Endurance Electrolyte Calculator

Calculate sodium, potassium, and magnesium needs per hour during endurance exercise based on sweat rate and conditions.

Thermic Effect of Food Calculator

Calculate how many calories your body burns digesting different macronutrient ratios (protein burns more than carbs or fat).

Adaptive Thermogenesis Calculator

Estimate how much your metabolism has slowed during a diet and calculate adjusted calorie targets to break plateaus.

Deload Week Nutrition Calculator

Calculate reduced calorie and macro targets for planned deload weeks to optimize recovery without excessive fat gain.

Protein Per Dollar Calculator

Compare protein sources by cost efficiency — input prices and serving sizes to rank foods by grams of protein per dollar.

Longevity Nutrition Score Calculator

Score your diet on longevity factors (fiber, polyphenols, omega-3, low processed food) based on Blue Zone and centenarian research.

Cycling Nutrition Calculator

Estimate calories, carbs, and hydration needs per hour for road cycling based on power output, weight, and ride duration.

Swimming Calorie Calculator

Calculate calories burned during swimming by stroke type, distance, pace, and pool temperature.

AI Triathlon Nutrition Planner

Generate a complete race-day nutrition strategy across swim, bike, and run legs with transition fueling.

Carb Loading Calculator

Plan a 3-day or 7-day carb-loading protocol with daily carb gram targets based on body weight and event type.

AI Race Nutrition Planner

Describe your upcoming race (distance, terrain, weather) and get a personalized fueling plan with product recommendations.

AI Sports Drink Recipe Builder

Get a custom DIY sports drink recipe with the right carb/electrolyte ratio for your sport, intensity, and duration.

Training Volume Calculator

Calculate total weekly volume load (sets × reps × weight) per muscle group to optimize hypertrophy and track progressive overload.

Strength Standards Calculator

See how your squat, bench, deadlift, and overhead press compare to population percentiles by age, gender, and body weight.

Progressive Overload Planner

Input your current lifts and get a 12-week progressive overload schedule with weekly weight/rep increments.

Powerlifting TDEE Calculator

Calculate TDEE specifically calibrated for powerlifters with heavy resistance training, accounting for EPOC and muscle repair.

Skeletal Muscle Mass Calculator

Estimate your skeletal muscle mass using the Lee equation from height, weight, age, gender, and ethnicity with SMI classification.

Body Type Calculator

Determine your somatotype (ectomorph, mesomorph, endomorph) from body measurements and get nutrition and training recommendations.

Weightlifting Warm-Up Calculator

Generate progressive warm-up sets with reps, rest times, and plate loading per side based on your working set weight.

AI Workout Nutrition Advisor

Describe your training session and get personalized pre, intra, and post-workout nutrition plans with exact macros and timing.

Waist-to-Height Ratio Calculator

Calculate your waist-to-height ratio to assess cardiovascular disease risk — a simple metric recommended by researchers worldwide.

Body Measurement Tracker

Log and visualize body measurements (chest, waist, hips, arms, thighs, calves) over time with progress charts.

DASH Diet Calculator

Calculate daily servings of grains, vegetables, fruits, dairy, and protein to follow the DASH diet for heart health.

Paleo Macro Calculator

Calculate optimal protein, fat, and carb ratios following Paleo principles with calorie targets based on your goals.

Atkins Net Carb Calculator

Calculate net carbs (total carbs minus fiber and sugar alcohols) for any food or meal to track Atkins phases.

AI FODMAP Analyzer

Describe a meal or list ingredients and get a FODMAP rating (low/moderate/high) for each component with IBS-friendly swaps.

Whole30 Compliance Checker

Paste an ingredient list or describe a meal and get instant feedback on whether it's Whole30 compliant with explanations.

AI Anti-Inflammatory Diet Scorer

Analyze your daily food intake and get a Dietary Inflammatory Index (DII) score with suggestions to reduce inflammation.

Vitamin D Intake Calculator

Calculate your recommended vitamin D dose based on latitude, skin tone, sun exposure, age, and current levels.

Iron Intake Calculator

Calculate daily iron needs based on age, gender, diet type (heme vs. non-heme), and absorption enhancers/inhibitors.

Omega-3 Intake Calculator

Calculate optimal EPA/DHA intake based on health goals (general, heart, brain, joint) with food and supplement guidance.

Calcium Intake Calculator

Calculate daily calcium needs by age and gender, showing how much you get from diet vs. what to supplement.

Magnesium Intake Calculator

Calculate your daily magnesium requirement based on age, gender, activity level, and common deficiency symptoms.

AI Supplement Stack Advisor

Describe your goals (muscle, sleep, focus, energy) and diet, and get a personalized supplement stack with dosages and timing.

Vitamin B12 Calculator

Calculate B12 needs based on diet type (vegan, vegetarian, omnivore), age, and absorption factors.

AI Micronutrient Gap Analyzer

Describe your typical daily diet and get an analysis of likely micronutrient gaps with food-first solutions.

Insulin Resistance Risk Calculator

Assess insulin resistance risk using the TyG index from fasting triglycerides and glucose, with dietary recommendations.

Metabolic Syndrome Risk Score

Calculate your metabolic syndrome risk from waist circumference, blood pressure, triglycerides, HDL, and fasting glucose.

Resting Metabolic Rate Comparison

Compare your measured or estimated RMR against predicted values to detect metabolic adaptation from prolonged dieting.

AI Metabolic Health Advisor

Enter your basic health markers (weight, waist, activity) and get personalized nutrition strategies to improve metabolic health.

AI Dining Out Advisor

Describe a restaurant type and your dietary goals, and get smart ordering strategies and menu navigation tips.

AI Snack Finder

Enter your remaining macros for the day and preferred snack type, and get snack suggestions that fit perfectly.

AI Bulk Cooking Planner

Enter your weekly calorie/macro targets and get a batch cooking plan for 2-3 cook sessions with portions and storage tips.

AI Nutrition Label Comparator

Describe 2-3 packaged food products and get a side-by-side nutrition comparison with a clear winner for your goals.

AI Holiday Meal Planner

Plan a nutritionally balanced holiday or celebration meal for a group, accounting for dietary restrictions and traditions.

AI Travel Nutrition Planner

Describe your travel destination and dietary needs to get a guide for eating healthy while traveling, including local food tips.

AI Kid-Friendly Nutrition Planner

Get balanced meal and snack ideas for children that are both nutritious and appealing, with hidden veggie strategies.

Recipe Serving Scaler

Adjust any recipe ingredient quantities from original servings to your desired serving count with automatic unit conversion.

Cooking Oil Calorie Calculator

Calculate the actual calories absorbed from cooking oils based on cooking method (frying, sautéing, baking) and food type.

AI Meal Remix Generator

Paste a meal you're bored of and get 5 creative variations that keep the same macros but change the flavor profile entirely.

AI Pantry Meal Builder

List what's in your pantry and get complete meal ideas with nutrition info, using only the ingredients you already have.

AI High-Volume Low-Calorie Meal Finder

Get meal ideas that are high in volume and fiber but low in calories — ideal for cutting phases and appetite management.

Meal Frequency Calculator

Calculate optimal meal frequency and calorie distribution across 2-6 meals based on your schedule and metabolic goals.

AI Cuisine Converter

Take any recipe from one cuisine and convert it to another style while maintaining similar nutrition (e.g., Italian to Asian).

Sleep Nutrition Calculator

Calculate optimal evening macros, caffeine cutoff time, and sleep-promoting nutrients based on your bedtime and sleep goals.

Recovery Day Nutrition Calculator

Calculate adjusted calorie and macro targets for rest days vs. training days to optimize muscle recovery.

Stress & Cortisol Nutrition Calculator

Get nutrition recommendations to manage cortisol, including magnesium, vitamin C, omega-3, and adaptogen guidance based on stress level.

AI Recovery Nutrition Advisor

Describe your training load, soreness, and sleep quality to get personalized recovery nutrition, supplement timing, and hydration guidance.

AI Gut Health Meal Planner

Describe your digestive symptoms and get a personalized meal plan rich in prebiotics, probiotics, and fiber tailored to gut health.

AI Mood & Food Advisor

Describe your current mood or energy level and get food suggestions backed by nutritional psychiatry research.

Cost Per Calorie Calculator

Compare foods by cost per 100 calories, cost per gram of protein, and overall value to find the most affordable way to meet your nutrition targets.

AI College Student Meal Planner

Get dorm-friendly and budget-friendly meal ideas using minimal equipment, meeting nutrition goals on a student budget.

AI Meal Plan for Shift Workers

Generate a nutrition plan optimized for rotating shifts, night shifts, or irregular schedules with meal timing and circadian rhythm guidance.

AI Meal Plan for Busy Families

Get a family-friendly weekly meal plan balancing nutrition for adults and kids with quick prep options under 30 minutes.

Electrolyte Balance Calculator

Calculate daily sodium, potassium, magnesium, and calcium needs based on diet type, activity level, climate, and sweat rate.

Hydration Status Estimator

Assess hydration status from urine color, body weight change, and thirst level with personalized fluid intake recommendations.

AI Hydration Strategy Builder

Describe your sport, climate, and training schedule to get a complete hydration protocol with timing and electrolyte ratios.

Diet Break Calculator

Plan structured diet breaks during long cuts — calculate maintenance calories, break duration, and macro adjustments for metabolic reset periods.

Refeed Day Calculator

Calculate higher-carb refeed day macros during a cut to restore leptin levels, replenish glycogen, and boost metabolic rate.

Weight Gain Timeline Calculator

Project how long it will take to reach your target weight during a lean bulk, with milestone tracking and muscle vs fat gain estimates.

Senior Nutrition Calculator

Calculate adjusted calorie, protein, calcium, and vitamin D needs for adults 60+ with sarcopenia prevention focus.

Teen Athlete Nutrition Calculator

Calculate calorie and macro needs for teen athletes (13-19) that support both growth and sports performance.

AI Nutrition for Beginners Guide

Describe your eating habits and goals to get a simple, jargon-free starter nutrition plan with easy-to-follow rules.

Muscle Maintenance Calculator

Calculate minimum protein and calorie intake to preserve muscle mass during reduced training from injury, travel, or busy periods.

GLP-1 Protein Calculator

Calculate elevated protein needs for users on semaglutide, tirzepatide, or other GLP-1 medications to prevent lean muscle loss during rapid weight loss.

GLP-1 Muscle Loss Risk Calculator

Estimate your lean mass loss risk on GLP-1 medications based on protein intake, resistance training, calorie deficit, age, and medication potency — with a personalized prevention plan.

GLP-1 Nutrition Score

Rate your daily diet on how well it supports GLP-1 therapy — scoring protein adequacy, fiber, hydration, micronutrient density, and nausea-trigger avoidance across five categories out of 100.

AI GLP-1 Meal Planner

Generate high-protein, nutrient-dense meal plans optimized for the reduced appetite and smaller portions typical of GLP-1 medication users (semaglutide, tirzepatide, liraglutide).

Walking Calorie Calculator

Calculate calories burned walking based on your weight, distance or time, walking pace, and terrain incline using MET values.

Steps to Calories Calculator

Convert your daily step count into estimated calories burned based on body weight, height, and walking pace. See distance covered, duration, and step goal progress.

Hiking Calorie Calculator

Calculate calories burned on trail hikes using distance, elevation gain, pack weight, and terrain type — with multi-day food packing estimates for backpacking trips.

Ideal Body Measurements Calculator

Calculate ideal muscle proportions (chest, arms, waist, thighs, calves) from bone structure measurements using Steve Reeves' classical formulas.

Jump Rope Calorie Calculator

Estimate calories burned jump roping based on session duration, jumps per minute, body weight, and style — with comparisons to running and total jump counts.

Stair Climbing Calorie Calculator

Calculate calories burned climbing stairs by number of flights, pace, and body weight — works for real stairs or a StairMaster machine.

HIIT Calorie Calculator

Calculate calories burned during HIIT workouts using work/rest interval structure, exercise type, and intensity — including the EPOC afterburn bonus.

Rowing Calorie Calculator

Estimate calories burned rowing by duration, stroke rate or split time, resistance level, and body weight — with Concept2 PM5-style cal/hour output.

Yoga Calorie Calculator

Estimate calories burned during yoga by style (vinyasa, hot yoga, hatha, power, yin), session duration, and body weight — with a visual comparison chart across all styles.

Rice Calorie Calculator

Calculate exact calories and macros for white, brown, jasmine, basmati, wild, and cauliflower rice — by portion size in grams or cups, raw or cooked.

Pasta Calorie Calculator

Calculate calories and macros for any pasta type and sauce. Choose pasta shape, dry or cooked weight in grams or oz, and sauce type for a complete meal breakdown.

Pizza Calorie Calculator

Build a custom pizza with crust type, size, sauce, cheese, and toppings to get per-slice and full-pie calorie breakdowns with macro estimates.

Egg Calorie Calculator

Calculate exact calories and macros for eggs by cooking method (boiled, fried, scrambled, poached, omelette), egg size, quantity, and added fats.

Chicken Breast Protein Calculator

Calculate protein, calories, and macros for chicken breast by weight and cooking method. Supports grilled, baked, fried, air-fried, and more — with skin-on or skinless options.

Oatmeal Nutrition Calculator

Choose your oat type, liquid, and toppings to calculate the complete calorie and macro breakdown for your oatmeal breakfast.

Sushi Calorie Calculator

Calculate calories and macros for any sushi meal — choose from preset rolls, nigiri, and sashimi with quantity selectors for a complete nutritional breakdown.

Sandwich Builder Calorie Calculator

Choose bread, protein, cheese, veggies, and condiments to calculate complete sandwich nutrition with per-ingredient breakdown.

Salad Builder Calorie Calculator

Build a custom salad with greens, toppings, protein, and dressing to reveal the true calorie count — often surprisingly high.

Heart Rate Zone Calculator

Calculate all five heart rate training zones (recovery, fat burn, aerobic, anaerobic, VO2 max) using the Karvonen formula — with fuel ratios, calorie estimates, and nutrition tips per zone.

Relative Fat Mass (RFM) Calculator

Calculate body fat percentage using waist circumference and height — a newer metric validated against DEXA scans and shown to be more accurate than BMI for estimating body fat.

Body Shape Calculator

Identify your body shape (apple, pear, hourglass, rectangle, inverted triangle) from bust, waist, and hip measurements — with waist-to-hip and waist-to-height health risk ratios and shape-specific nutrition tips.

Muscle Gain Potential Calculator

Estimate your maximum natural muscular potential using the Casey Butt, Martin Berkhan, and Lyle McDonald formulas — based on height and bone structure — to see how much muscle you can realistically gain.

Grip Strength Percentile Calculator

Enter your dynamometer reading, age group, and gender to see your grip strength percentile — a validated predictor of longevity, all-cause mortality risk, and overall health based on Bohannon/NHANES normative data.

Visceral Fat Estimator

Estimate your visceral fat area (cm²) and Tanita-scale rating from waist circumference, height, weight, age, and gender — using published regression equations with WHO risk classification and reduction tips.

30-30-30 Rule Calculator

Plan the viral morning routine: get 3 breakfast options with 30 g protein tailored to your diet, a personalized Zone 2 cardio heart rate range, estimated calorie burn, and a time-stamped morning schedule.

Caloric Density Calculator

Calculate the calorie density (cal/g) of any food and classify it into green, yellow, or red Volumetrics zones. Compare up to 6 foods on a bar chart and see how much you can eat for 100, 200, or 300 calories.

WW SmartPoints Calculator

Calculate a food's WW SmartPoints and PersonalPoints from calories, saturated fat, sugar, protein, fiber, and unsaturated fat. See your % of daily budget and add up to 5 foods for a full meal total.

AI Hormone-Balancing Meal Planner

Describe your hormonal health goals and get a personalized meal plan scored for fiber, cruciferous vegetables, healthy fats, and blood sugar stability — optimized for PCOS, menopause, thyroid, or estrogen balance.

Satiety Score Calculator

Score any food or meal on a 0–100 satiety scale based on protein density, fiber, water content, and energy density using the Holt Satiety Index. Compare up to 4 foods side by side to see which keeps you fullest.

UPF Score Calculator

Score your daily diet on the NOVA classification scale (1–4) to see what percentage of calories come from ultra-processed foods — with swap suggestions to shift toward whole, minimally processed eating.

75 Hard Nutrition Calculator

Calculate calorie and macro targets for the 75 Hard challenge with double-workout fueling, strict diet compliance, and gallon-of-water tracking. Get pre/post workout meal timing and a sample meal template.

AI Refeeding Protocol Planner

Enter your fast duration and body stats to get a structured refeeding plan with recommended foods, portion sizes, and timing for safely breaking a fast — whether 16 hours or 5+ days.

Circadian Eating Window Calculator

Calculate your optimal eating window based on wake time, sleep time, chronotype (early bird vs. night owl), and work schedule to align meals with your circadian rhythm for better metabolism and energy.

Cooked vs. Raw Weight Converter

Convert between raw and cooked weights for meats, grains, pasta, and vegetables with accurate shrinkage and expansion factors. See adjusted calorie density and get tracking recommendations.

Sweetener Substitute Calculator

Convert between sugar, stevia, erythritol, monk fruit, allulose, xylitol, honey, maple syrup, and more. Get the exact substitute amount, calories saved or added, net carb change, and baking tips for every swap.

Flour Substitution Calculator

Convert between all-purpose, whole wheat, almond, coconut, oat, cassava, and rice flour with adjusted quantities, binding agents needed, liquid adjustments, and a full nutritional comparison. Includes recipe-specific tips for cookies, cakes, bread, muffins, pancakes, and pizza dough.

Cooking Measurement Converter

Convert between cups, tablespoons, teaspoons, ml, grams, and ounces for 25+ common kitchen ingredients with density-adjusted accuracy. Includes calorie count for the measured amount and a quick-reference equivalents table.

Air Fryer Conversion Calculator

Convert conventional oven, convection oven, deep fryer, or pan fry recipes to air fryer temperature and time settings. See calorie savings from using less oil and get food-specific tips for perfect results.

Egg Substitute Calculator for Baking

Find the best egg replacement for any baking recipe. Choose from flax egg, chia egg, applesauce, banana, aquafaba, yogurt, and more — with exact scaled measurements, calorie comparison, and recipe-specific guidance.

Meat Cooking Yield Calculator

Enter raw weight and cut of meat to get expected cooked weight after moisture and fat loss, plus adjusted calories per cooked ounce. Covers chicken, beef, pork, salmon, shrimp, turkey, lamb, and brisket across all major cooking methods.

Milk Alternative Comparison Calculator

Compare the nutrition of the same drink made with whole milk, oat, almond, soy, coconut, or other alternatives side by side.

Bubble Tea Calorie Calculator

Choose your tea base, size, sugar level, milk type, and toppings (boba pearls, jelly, pudding) to see total calories and sugar content — with a Coke comparison and healthier order tips.

Cocktail Nutrition Calculator

Build any mixed drink from spirits, mixers, syrups, and garnishes — or pick from 10 preset cocktails — to see exact calories, carbs, sugar, alcohol grams, and standard drink count.

Protein Shake Builder

Select protein powder type, liquid base, and add-ins (banana, peanut butter, oats, berries) to calculate exact shake macros and nutrition.

30 Plants a Week Tracker

Log the plant foods you eat across a week and track your progress toward the research-backed 30 different plants per week diversity goal.

Fiber Diversity Score Calculator

Score your daily diet on variety of fiber types (soluble, insoluble, resistant starch, prebiotic) from different food sources for microbiome health.

Prebiotic Intake Calculator

Calculate daily intake of prebiotic fibers (inulin, FOS, GOS, resistant starch) from the foods you eat vs. the recommended 5g+ per day.

Fermented Food Intake Tracker

Log daily servings of fermented foods (yogurt, kefir, kimchi, sauerkraut, kombucha, miso) and track against the Stanford study recommendation.

Burrito Builder Calorie Calculator

Build a custom burrito layer by layer (tortilla, protein, rice, beans, toppings, sauce) and see a running calorie and macro total.

Plate Method Calculator

Build a balanced plate following the USDA MyPlate method (1/2 vegetables, 1/4 protein, 1/4 grains) with calorie and macro totals for your portions.

Portion Size Calculator

Input a food item and get visual portion guides (deck of cards, tennis ball, fist) with calorie counts for small, medium, and large servings.

Race Time Predictor

Predict your finish time for any race distance based on a recent result at a different distance using Riegel's formula and VDOT equivalents.

Pickleball Calorie Calculator

Estimate calories burned during pickleball by match intensity (recreational vs. competitive), duration, singles vs. doubles, and body weight.

AI Combat Sports Cut Advisor

Describe your weight class, current weight, and competition date to get a safe weight-cut timeline with nutrition, water, and rehydration protocols.

Cold Plunge Calorie Calculator

Estimate calories burned during cold water immersion based on water temperature, duration, body weight, and acclimatization level.

12-Week Transformation Planner

Input start date and goals to generate a 12-week plan with 3 distinct calorie/macro phases (aggressive cut, moderate, maintenance ramp).

Vacation Body Calculator

Input trip date and current stats to get a realistic mini-cut plan that peaks aesthetics for a specific date without crash dieting.

AI Anabolic Recipe Builder

Describe a dessert or comfort food craving and get a high-protein, low-calorie "anabolic" version recipe with exact macros and ingredients.

Collagen Intake Calculator

Calculate optimal daily collagen peptide dose by goal (skin, joint, gut, tendon) with vitamin C pairing guidance and food-source alternatives.

Leucine Threshold Calculator

Calculate minimum protein per meal to trigger muscle protein synthesis (~2.5-3g leucine) adjusted for protein source quality and age.

Complete Protein Combiner

Enter 2-3 plant foods and see their combined amino acid profile displayed against the complete protein threshold to find perfect combos.

Meal Carbon Footprint Calculator

Enter meal ingredients and get total CO2 equivalent in kg, with comparison to driving miles and suggestions for lower-impact swaps.

Meal Prep Cost Calculator

Input a weekly meal prep plan and calculate total grocery cost, cost per meal, and cost per macro with comparison to eating out.

Weight Loss Percentage Calculator

Calculate weight loss as a percentage of starting weight — useful for tracking progress, competitions, and Biggest Loser-style challenges.

Food Water Footprint Calculator

Calculate how many liters of water your meal required to produce, comparing foods like beef (~15,000 L/kg) vs. lentils (~1,250 L/kg).

Track your nutrition the easy way

Use our calculators to find your targets, then track your meals effortlessly with BiteKit. Just speak or type what you ate.

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