Health

BMI, calorie, and wellness calculators to support your health goals.

Calculate adult Body Mass Index from height and weight and see the matching WHO category range.

Estimate basal metabolic rate with Mifflin-St Jeor, Harris-Benedict, or Katch-McArdle and map it to activity levels.

Estimate maintenance calories from BMR and activity, then plan deficit or surplus targets for weight goals.

Estimate total daily energy expenditure by combining a BMR formula with your typical activity multiplier.

Approximate body fat percentage from common measurement formulas and visualize lean vs fat mass.

Estimate daily protein targets from weight, activity, and goals, with adjustments for pregnancy or lactation.