Health & Fitness Calculators

BMI Calculator

Calculate your Body Mass Index and see your WHO weight category instantly.

Calorie Calculator

Calculate your daily calorie needs, BMR and TDEE to maintain, lose or gain weight.

Ideal Weight Calculator

Find your ideal body weight using Hamwi, Devine, Robinson and Miller formulas plus a healthy BMI range.

BMR Calculator

Calculate your basal metabolic rate with Mifflin-St Jeor or Katch-McArdle equations.

Body Fat Calculator

Estimate body fat percentage with the US Navy method using tape measurements.

Macro Calculator

Convert calories into protein, carb and fat gram targets for any macro split.

Water Intake Calculator

Calculate how much water to drink daily based on body weight and activity.

Heart Rate Zone Calculator

Find your maximum heart rate and training zones from 50% to 100% intensity.