Health

5 calculators

Check your BMI, estimate how many calories and how much protein you need, or find your due date and fertile window.

Formulas come from established medical references and are explained on every page. They are estimates, not a diagnosis.

Calculate your body mass index from height and weight in feet, inches and pounds or metric units, with your healthy weight range.

Estimate your body fat percentage from height, neck, waist and hip measurements with the U.S. Navy method, plus fat mass and lean mass.

Estimate how many calories you burn per day (BMR and TDEE) and how many to eat to lose, maintain or gain weight, using Mifflin-St Jeor.

Predict your ovulation day, fertile window and next period from the first day of your last period and your cycle length, for the next 6 cycles.

Find your baby’s due date from your last period, conception date or IVF transfer, plus how many weeks pregnant you are and key milestones.

Health calculators