Health

body and energy, worked out from a few numbers

Use a dedicated health calculator page for a direct link, explanation, formula, example, and FAQs.

BMI calculator

Body mass index from height and weight — a rough screening measure, not a diagnosis.

BMI 0

18.5 (underweight) to 30 (obese) scale

Calories burned

Estimate energy spent during an activity using the standard MET method: MET × weight × duration.

Calories burned 0 kcal

0 kcal/min · 0 MET

  • Same burn, walking instead0 min

Intensity, light to vigorous

BMR calculator

Basal metabolic rate — calories your body needs at complete rest, via the Mifflin-St Jeor equation.

BMR 0 kcal/day

Calories burned at complete rest, before any activity

TDEE calculator

Total daily energy expenditure — your BMR scaled up for how active you are.

TDEE — calories to maintain weight 0 kcal/day
  • BMR0 kcal/day
  • To lose weight (~0.5 kg/week)0 kcal/day
  • To gain weight (~0.5 kg/week)0 kcal/day

Ideal weight

Estimate a healthy weight range from height, using the WHO BMI band and four clinical formulas.

Ideal weight, average of 4 formulas 0 kg

Healthy BMI range:

  • Devine formula0 kg
  • Robinson formula0 kg
  • Miller formula0 kg
  • Hamwi formula0 kg

Healthy BMI range, with the formula average marked

Body fat calculator

U.S. Navy tape-measure method, from neck and waist (and hip, for women).

Estimated body fat 0%