Health & Fitness Calculators
TDEE, BMI, body fat, water intake, sleep, and calorie deficit calculators — evidence-based formulas.
TDEE Calculator
Free TDEE calculator: estimate your total daily energy expenditure, BMR, and calories for cutting, maintaining, or bulking.
Open calculator →Water Intake Calculator
Free water intake calculator: how much water you should drink daily based on weight and exercise.
Open calculator →Sleep Calculator
Free sleep calculator: the best bedtimes to wake up refreshed, based on 90-minute sleep cycles.
Open calculator →Body Fat Calculator
Free body fat percentage calculator using the US Navy tape method.
Open calculator →BMI Calculator
Free BMI calculator: your body mass index and weight category from height and weight.
Open calculator →Calorie Deficit Calculator
Free calorie deficit calculator: how long it takes to lose your target pounds at your calorie intake.
Open calculator →Heart Rate Calculator
Free heart rate calculator: max heart rate and target training zones by age and resting rate.
Open calculator →