Health
Health and fitness
Calculators for body measurements: body mass index, ideal weight, daily calories and body fat percentage.
Numbers to read together
Each index sees the body from one side only: BMI cannot tell muscle from fat, ideal weight ignores build, calorie needs are a population average. Read together they give a more useful picture, but they remain estimates: for decisions about your health, ask a doctor.
BMI calculator
Body mass index with the WHO classes, the healthy weight for your height and a colour gauge.
Ideal weight
Ideal weight by the Devine, Robinson, Miller, Hamwi and Lorentz formulas, set against the healthy BMI range.
Calorie calculator
Basal metabolic rate and daily calories by the Mifflin–St Jeor equation, to maintain, lose or gain weight.
Body fat
Body fat percentage by the US Navy method from neck, waist and hips, with fat and lean mass.