BMR Calculator

Calculate BMR

Please select either metric BMR calculator (EU) or imperial BMR calculator (US).
Note: If entering height in feet and inches please only use 2 digits. Example: height of 6 foot and 1.5 inches should be entered as 6 foot 2 inches.

Harris J, Benedict F. 1919. A biometric study of basal metabolism in man. Washington DC: Carnegie Institute of Washington.

BMR Calculator

Select metric / imperial:
Your gender:
Your height:
in in centimeters (cm).
Your weight:
in in kilograms (kg).
Your age:
in years. Example “35”.
Select activity level:
Your required calorie intake is:

Results / Please note:
BMR calculator will calculate your basal metabolic rate. This is not your total daily calorie expenditure! If you want to know more about BMR read this article on what is basal metabolic rate.
To calculate how many calories you’ve burned during an activity try our calorie expenditure calculator.

The results provided by our BMR calculator are not 100% accurate as BMR calculator does not take into account the following factors:

  • density of your bones,
  • your muscle mass,
  • your body fat percentage,
  • the amount of water that is present in your body at the moment of calculation.

About BMR

BMR is short for Basal Metabolic Rate and represent the amount of calories your muscles burn every day just to maintain vital operations such as breathing or thinking. In other words, BMR rate is the amount of calories your body would burn if you were to stay in bed the whole day and do nothing at all!

What is BMR?
How to use BMR calculator
Calculate BMR
Calculate BMI
Calculate HR zones
Calculate BF percentage

If you have selected activity level when calculating BMR than the above tool will calculate your approximate daily calorie expenditure. If you exceed that number (caloric surplus) you will start to gain weight as your body will gain extra fat. If you do not exceed that number (caloric deficit) you will maintain or lose weight (if caloric deficit is high).

Read more about gaining and losing weight in this article: How many calories should I eat per day to lose weight?

The accuracy of this calculation is still fairly accurate for non-obese and non-athlete persons.

How to use BMR calculator?

In order to calculate your Basal Metabolic Rate (BMR), please input your physical characteristics. You can use metric (kilograms, centimeters) or imperial (lbs, inches) BMR calculator. When entering values, do not add “cm” “kg” “lbs” or “ft” to your number, but only input plain numbers. Select your gender (man / woman) and select your activity level. By selecting activity level your calculated value will be moderately higher. This is normal.

Additional reading:
What is BMR?
How to boost metabolism?
How many calories should you consume per day?
Chewing food more can help you lose weight!

Keywords: bmr calculator, calculate bmr, basal metabolic rate calculator, men and women bmr calculator



  1. Putting on Muscle While Limiting Fat “The Hard Gainer”

    […] that you consume the proper amount of calories to begin making the gains you want. Sometimes an adjusted BMR is going to take a lot of calories to […]

  2. ankur

    is this bmr calculator accurate? thanks.

  3. jodi

    I’ve been using this BMR Calculator before i used the US Metric & it works fine but now when i press calculate it says Nan…why & what does it mean? Pls answer..Thank you in advance


      Hello. When you are entering your height in ft ins format please input the number in following format: 5.6 (use decimal mark). Hope this solves your issue.

  4. trina

    mine just kept saying NaN idk what that means


      Hello. Have you selected US/EU units? What parameters are you inputting?

  5. mrMoon

    How can I boost my basal metabolic rate?

  6. Andrew R

    Hello. How do I make use of this bmr calculator? My numbers seems way off. I am 45 year old male, my height is 180 cm and my weight is 85 kg.
    Thank you for reply. A

  7. tina

    Hello. Are these results accurate? My bmr is calculated to be 1652 calories which seems a bit too little for me?
    Thank you.

    • Healthiack

      Hello. This is most probably your base BMR. BMR calculator calculates BMR using your body characteristics. You need to select activity level as well to get a better estimation of your daily caloric needs.

  8. Healthiack

    You need to input your gender, age, height and weight and press “calculate”.

  9. chinonso

    Calculate my BMR


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