Free Fitness Calculators
9 science-based tools to help you reach your fitness goals
No signup • No tracking • Always free
BMI Calculator
Calculate your Body Mass Index and understand what it means for your health.
TDEE Calculator
Calculate your Total Daily Energy Expenditure and daily calorie needs.
Macro Calculator
Calculate your daily macronutrient needs for protein, carbs, and fat.
Calorie Counter
Track your daily calorie intake with our comprehensive food database.
Body Fat Calculator
Estimate your body fat percentage using the U.S. Navy method.
Meal Plan Generator
Generate personalized meal plans based on your calorie and macro needs.
Water Intake Calculator
Calculate your daily water needs based on weight, activity, and climate.
Protein Needs Calculator
Calculate your daily protein requirements for muscle building and recovery.
Workout Split Generator
Create personalized weekly workout splits based on your experience level.
3 Supplements That Actually Work
Based on scientific research. We earn a small commission if you purchase (at no cost to you).
Why Use Our Calculators?
Scientifically Accurate
Based on validated formulas and health standards used by professionals.
Private & Secure
Your data stays on your device. No accounts, no tracking, no data collection.
Always Free
No premium plans, no paywalls. All calculators are completely free to use.