Fitness Calculators
2 free calculators
Tools to track your body composition, energy expenditure, and training progress.
TDEE Calculator
Calculate your Total Daily Energy Expenditure — the cornerstone of any effective diet plan.
TDEE = BMR × Activity Multiplier
Body Fat Calculator
Estimate your body fat percentage using the US Navy circumference method. All you need is a tape measure.
US Navy Circumference Method
Why Use Fitness Calculators?
Fitness calculators take the guesswork out of your training and nutrition by providing data-driven, personalized targets. Instead of following generic advice, you get numbers calibrated to your specific body, goals, and lifestyle. This is especially important for metrics like TDEE and body fat percentage, which vary enormously between individuals.
Our fitness calculators use the same formulas trusted by certified personal trainers, sports nutritionists, and exercise physiologists — now available to you, for free, in seconds.