Nutrition & Diet Calculators

41 professional health calculators • 100% free to use

Calculate food calories, macros, TDEE, and daily water intake. Plan meals, track calorie deficit, and analyze recipe nutrition with free diet calculators.

All Nutrition & Diet Calculators

BMR Calculator: Basal Metabolic Rate by Proven Formulas

Use our BMR calculator to estimate your basal metabolic rate using Mifflin–St Je...

Calorie Calculator: Daily TDEE and Intake Estimate

Use our calorie calculator to estimate daily energy needs (TDEE) from age, sex, ...

Calorie Deficit Calculator — Set a Safe Daily Deficit

Use our calorie deficit calculator to set a safe daily calorie target. Estimate ...

Calorie Intake Calculator: Daily Calories for Your Goal

Use our calorie intake calculator to estimate daily calories from your BMR and a...

Carb Calculator: Set Daily Carbohydrate Targets Online

The carb calculator assigns daily carbohydrates by calories, macro split, and tr...

Chipotle Bowl Calorie Calculator — Build & Track Macros

How many calories in a chipotle bowl? Use our free chipotle bowl calorie calcula...

Chipotle Calorie Calculator: Count Calories as You Build

Use the Chipotle calorie calculator to count calories for bowls, burritos, tacos...

Chipotle Macro Calculator: Protein, Carbs, and Fat

Plan your meal precisely with the Chipotle macro calculator. See protein, carbs,...

Chipotle Nutrition Calculator: Build Bowls, Burritos, Tacos

Build your order with our Chipotle nutrition calculator. Customize bowls, burrit...

Daily Calorie Calculator — Personalized TDEE by Activity

Use our daily calorie calculator to estimate maintenance calories (TDEE) from yo...

Diet Calculator: Set a Safe Deficit or Surplus Plan

Use the diet calculator to choose your target pace and get daily calorie goals w...

Fast Food Calculator: Calories, Macros, Sodium, Sugar

Use our fast food calculator to build a meal and see calories, protein, carbs, f...

Fasting Calculator: Plan Daily Fasts & Eating Windows

This fasting calculator plans daily fasts and custom eating windows, with precis...

Fat Intake Calculator: Daily Fat Grams & Saturated Fat

Free fat intake calculator for daily fat grams from calories or body weight. Inc...

Food Calorie Calculator: Calories per Serving or 100g

Use the food calorie calculator to find calories for any food by weight or servi...

Nutrition Calculator: Food Macros & Micros Analyzer

Free nutrition calculator that breaks down calories, macros, vitamins, and miner...

How Much Water Should I Drink Calculator — Daily Goal

Use the how much water should i drink calculator to set a daily goal by weight, ...

Hydration Calculator: Personal Daily Water Goal & Tips

Our hydration calculator sets a personalized daily water goal using your weight,...

Intermittent Fasting Calculator: Plan Your IF Schedule

Use our intermittent fasting calculator to plan eating/fasting windows for 16:8,...

Keto Calculator: Calculate Your Ketogenic Diet Macros

Use the keto calculator to set net carbs, protein, and fat levels to enter and m...

Keto Macro Calculator: Daily Net Carbs, Protein and Fat

This keto macro calculator builds your daily macro ratios and exact grams. Choos...

Macro Calculator for Weight Loss: Fat-Loss Macros Made Easy

This macro calculator for weight loss applies a deficit and recommends protein, ...

Macro Calculator: Daily Protein, Carbs & Fat Targets

Use our macro calculator to set precise protein, carb, and fat targets using you...

Macronutrient Calculator: Protein, Carbs, and Fat by Goal

Use our macronutrient calculator to set protein, carbs, and fat for weight loss,...

Maintenance Calories Calculator — Daily Energy to Maintain

Estimate calories to maintain weight with the maintenance calories calculator. U...

Meal Plan Calculator: Create a Simple Custom Diet Plan

Use the meal plan calculator to build meals from your calorie and macro targets ...

Metabolic Rate Calculator: BMR, RMR & TDEE Estimate

Use our metabolic rate calculator to estimate BMR/RMR and TDEE from age, sex, he...

Protein Calculator for Weight Loss: Set Your Cutting Target

Use our protein calculator for weight loss to set a daily target that preserves ...

Protein Calculator: Daily Protein by Goal & Activity

Use our protein calculator to set daily protein by body weight or lean mass, goa...

Protein Intake for Muscle Gain Calculator: Build Lean Mass

Use the protein intake for muscle gain calculator to set daily grams for lean ga...

Recipe Calorie Calculator: Total & Per-Serving Calories

Use the recipe calorie calculator to add ingredients by weight, set servings, an...

Recipe Nutrition Calculator — Macros Per Serving Free

Free recipe nutrition calculator — add ingredients, set servings, and get per‑se...

RMR Calculator: Resting Metabolic Rate Estimator Online

Use our rmr calculator to estimate your resting metabolic rate (REE) with metric...

Starbucks Calorie Calculator: Customize Drinks by Size

Customize your drink with the Starbucks calorie calculator. Choose size, milk, s...

Starbucks Nutrition Calculator: Calories and Macros

Use the Starbucks nutrition calculator to see calories and macros for coffee, te...

Subway Calorie Calculator — Build and Track Calories

Use our Subway calorie calculator to build a sandwich and see calories update. C...

Subway Nutrition Calculator: Sandwich Calories & Macros

Use our Subway nutrition calculator to build a sandwich and see calories, macros...

Taco Bell Nutrition Calculator for Calories & Macros

Use our Taco Bell nutrition calculator to build your meal and instantly see calo...

TDEE Calculator to Lose Weight — Plan Your Deficit

Use the TDEE calculator to lose weight with a safe calorie deficit. Estimate wee...

TDEE Calculator: Daily Maintenance Calories (Free)

Use the TDEE calculator to estimate total daily energy expenditure, choose an ac...

Water Intake Calculator: Daily Needs by Weight & Age

Use our water intake calculator to estimate daily hydration from your weight, ex...

Total Tools

41

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Why Use Our Nutrition & Diet Calculators?

Our nutrition and diet calculator suite includes 41 free tools for tracking food calories, calculating macronutrients, estimating TDEE (total daily energy expenditure), planning calorie deficits for weight loss, and analyzing recipe nutrition. Whether you need to count calories per food item, calculate your daily protein intake for muscle gain, or find the macros in a meal, these calculators use USDA food composition data and Mifflin-St Jeor equations for accurate results.

Who Are These Calculators For?

Dieters tracking calorie intake, athletes optimizing macros for performance, meal preppers analyzing recipe nutrition, and anyone curious about the calorie content of specific foods. Our Chipotle and Taco Bell nutrition calculators are especially popular for making informed fast-food choices.

How Our Calculators Work

Select your food items or enter your personal stats (age, weight, height, activity level) depending on the calculator. Results include calorie counts, macro breakdowns (protein, carbs, fat), and personalized recommendations. All calculations use USDA nutritional databases and peer-reviewed metabolic equations.

Key Benefits

  • Medical-grade accuracy based on WHO and CDC guidelines
  • Instant results with detailed explanations and recommendations
  • 100% private — all calculations run locally in your browser
  • No registration, no personal data collected

Frequently Asked Questions

How do I calculate calories in my food?

Use our food calorie calculator to look up any food item and see its calorie content per serving or per 100g. For full meals, our recipe nutrition calculator lets you add multiple ingredients and quantities to get a complete calorie and macro breakdown.

What is TDEE and how do I calculate it?

TDEE (Total Daily Energy Expenditure) is the total number of calories your body burns per day, including exercise. Our TDEE calculator uses the Mifflin-St Jeor equation combined with your activity level to estimate this number, which is essential for weight loss or muscle gain planning.

How many calories should I eat to lose weight?

A safe calorie deficit is typically 500-750 calories below your TDEE, resulting in about 1-1.5 lbs of weight loss per week. Our calorie deficit calculator shows your exact daily target based on your stats, activity level, and weight loss goals.

How much protein do I need per day for muscle gain?

Research suggests 1.6-2.2 grams of protein per kilogram of body weight for muscle building. Our protein intake calculator provides a personalized recommendation based on your weight, body composition goals, and training intensity.

How much water should I drink daily?

Daily water intake depends on your weight, activity level, climate, and diet. Our hydration calculator estimates your optimal intake, typically ranging from 2.5-4 liters per day for active adults. The common 8-glasses rule is a simplified guideline that does not account for individual differences.

Explore More Health Calculators

Discover our complete collection of 280 health calculators across 9 categories