Health

Calculate your Body Mass Index using metric or imperial units.

Estimate daily calorie needs, BMR, and TDEE based on age, height, weight, and activity level.

Calculate your recommended daily water intake based on weight, activity, and climate.

Estimate body fat percentage using the U.S. Navy body fat formula.

Find your healthy weight range using established ideal weight formulas.

Estimate max heart rate and heart rate training zones with standard and Karvonen methods.

Calculate waist-to-height ratio from waist and height measurements with cautious interpretation.