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BMR and calorie calculator

Estimate resting energy and daily energy expenditure in metric or US units with three equations.

Get started

  1. Use the example values or enter your own measurements.
  2. Calculate, then copy the result or download the available details.

Example

Input

Male equation, 30 years, 70 kg, 175 cm, Mifflin–St Jeor

Expected result

1,648.75 kcal/day at rest

Try it

Good to know

The calculation runs in your browser. Use consistent units in fields with no explicit unit.

Calculation method

Resting energy is estimated with Mifflin–St Jeor, revised Harris–Benedict or Katch–McArdle. Daily expenditure multiplies the estimate by your activity factor.

Calculation mode

Metric
  • Age
  • Equation group · Male / Female
  • Weight · kg
  • Height · cm
  • Equation · Mifflin–St Jeor / Revised Harris–Benedict / Katch–McArdle
  • Body fat for Katch–McArdle · %
  • Activity factor
  • Energy unit · kcal/day / kJ/day
US customary
  • Age
  • Equation group · Male / Female
  • Weight · lb
  • Height in feet · ft
  • Additional inches · in
  • Equation · Mifflin–St Jeor / Revised Harris–Benedict / Katch–McArdle
  • Body fat for Katch–McArdle · %
  • Activity factor
  • Energy unit · kcal/day / kJ/day