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Basal Metabolic Rate (BMR) Calculator

the Harris-Benedict equation



This web page calculates your Basal Metabolic Rate (BDR) and the approximate daily kilocalorie intake to maintain your current body weight. The calculations are done based on the original Harris–Benedict equations published in 1918 and 1919. To know more about this check the following wikipedia page: Harris–Benedict equation


Please, fill in all the fields below to get your result.


Mandatory Parameters

Imperial   Metric  

Female   Male  

(0~123) yr

' " (0~8'11")

    (0~1312) lbs

Addtional info According to this article:
  • Sedentary = little or no exercise, desk job
  • Lightly active = light exercise/ sports 1-3 days/week
  • Moderately active = moderate exercise/ sports 6-7 days/week
  • Very active = hard exercise every day, or exercising 2 xs/day
  • Extra active = hard exercise 2 or more times per day, or training for marathon, or triathlon, etc.
Notes:
  1. The results are only refreshed after you press the calculate button.
  2. The multiplying factor for activity level was taken from the above cited article.
  3. The maximum values for the ranges were selected based on the world record of the tallest person, the haviest person, and the oldest person ever to be alive on earth.
  4. Due to the precision of the parameters given on Wikipedia, you may get slightly different results between calculations made using the metric system and calculations using the imperial system.
Results