Health & Fitness calculators
BMI, calories and body measurements, with the formulas and their limits explained.
8 calculators, each with the formula, a worked example and sources.
- BMI CalculatorBody mass index for adults, the CDC category, and the healthy weight range for your height.
- BMR CalculatorBasal metabolic rate from three standard equations, side by side.
- Body Fat CalculatorEstimate body fat percentage from a few tape measurements (US Navy method).
- Calorie CalculatorDaily calories to maintain your weight, or to lose or gain it gradually, with safe minimums.
- Ideal Weight CalculatorCompare the Devine, Robinson, Miller and Hamwi formulas with the healthy BMI range for your height.
- Macro CalculatorSplit daily calories into grams of protein, carbohydrate and fat within federal ranges.
- TDEE CalculatorEstimate the calories you burn in a day from BMR and activity level.
- Waist-to-Height Ratio CalculatorDivide your waist by your height and see where you fall against the 0.5 threshold.