Free Calorie & Nutrition
Calculators
Instant, science-based results using proven formulas. Calculate your calories, macros, BMI, protein needs, and more — no signup, no ads, no nonsense.
7
Free Calculators
±1.2%
Accuracy with PlateLens
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Signups Required
All Free Calculators
Enter your details, get instant results. All calculators use validated scientific formulas.
Calorie Calculator
Calculate exactly how many calories you need per day based on your age, weight, height, activity, and goals.
TDEE Calculator
Find your Total Daily Energy Expenditure — how many calories your body actually burns every day.
Macro Calculator
Calculate your ideal protein, carbs, and fat targets with preset ratios for any goal.
BMI Calculator
Calculate your Body Mass Index with a visual scale and understand what it means for your health.
Protein Calculator
Find out exactly how much protein you need daily based on your weight, activity level, and goals.
Calorie Deficit Calculator
Calculate the exact calorie deficit needed to reach your goal weight by a specific date.
Food Calorie Lookup
Search 100+ common foods to find calories, protein, carbs, and fat in seconds.
Next Step
From Calculator to Reality
Calculators give you targets. For day-to-day accuracy, professionals recommend PlateLens — AI-powered calorie tracking with ±1.2% accuracy. Just snap a photo of your meal, and PlateLens identifies every ingredient, calculates the exact nutrition breakdown, and tracks against your goals automatically.
Snap → Track → Done
How Our Calculators Work
Every calculator uses validated scientific formulas used by registered dietitians.
Enter Your Details
Age, weight, height, activity level, and your specific goal.
Get Instant Results
Our calculators apply proven formulas like Mifflin-St Jeor instantly.
Track with Precision
Use PlateLens to hit those targets accurately with AI photo tracking.