Health calculators

BMI, BMR, calorie estimates, ideal-weight formulas, ovulation, and due-date math. These are screening or planning numbers, not medical advice.

BMI, BMR, calorie estimates, and related body-weight tools. These are screening or planning numbers, not medical advice.

BMI Calculator · Pregnancy Due Date Calculator · Ovulation Calculator · BMR Calculator · Calorie Calculator · Ideal Weight Calculator

Calculate body mass index from height and weight. BMI is a population screening measure, not a verdict on health.

Estimate a due date from the first day of the last menstrual period by adding 280 days (40 weeks).

Estimate ovulation around 14 days before the next period, from cycle length and the last period start.

Estimate calories burned at rest from age, sex, height, and weight. This page uses the Mifflin-St Jeor equation.

Estimate daily energy need as BMR times an activity factor, then see a moderate deficit and surplus.

Compare three height-based ideal-weight formulas and the WHO healthy BMI weight band for the same height.

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