Health calculators

BMI, calories, metabolism, and body-weight estimates.

Check Body Mass Index from height and weight using metric or imperial units.

Estimate a due date from the first day of the last menstrual period using Naegele’s rule.

Estimate ovulation day, fertile window, and next period from cycle length and last period.

Estimate basal metabolic rate with the Mifflin-St Jeor equation.

Estimate daily calorie needs from BMR and activity level, with cut and surplus targets.

Estimate a healthy weight range from height using Devine, Robinson, and Miller formulas.