Health Calculators

Calculate Body Mass Index from weight and height. Get your category (underweight/normal/overweight/obese).

Calculate Basal Metabolic Rate using the Mifflin-St Jeor equation.

Calculate Total Daily Energy Expenditure based on BMR and activity level.

Estimate body fat percentage using the US Navy circumference method.

Calculate daily calorie target for weight loss, maintenance, or gain.

Calculate ideal body weight using four established formulas (Devine, Robinson, Miller, Hamwi).

Estimate daily water intake based on body weight and exercise duration.

Calculate the five heart rate training zones based on your age-predicted maximum.