BMR Calculator

The BMR Calculator is a useful tool for determining your Basal Metabolic Rate, which is the number of calories your body needs to sustain essential functions while at rest.

What is the purpose of the BMR Calculator?

The BMR Calculator helps estimate the number of calories your body needs to maintain vital functions such as breathing, circulation, and body temperature at rest.

BMR Calculator formula

The formulas for calculating BMR differ slightly for men and women, based on the Harris-Benedict Equation:

For men:

BMR = 88.362 + (13.397 x weight in kg) + (4.799 x height in cm) - (5.677 x age in years)

For women:

BMR = 447.593 + (9.247 x weight in kg) + (3.098 x height in cm) - (4.330 x age in years)

BMR Calculator examples

Here’s how to calculate your BMR with detailed examples:

Example 1: Male BMR calculation

1. A man weighs 70 kg, is 175 cm tall, and is 30 years old.
2. Use the male formula:
   BMR = 88.362 + (13.397 x weight) + (4.799 x height) - (5.677 x age)
BMR = 88.362 + (13.397 x 70) + (4.799 x 175) - (5.677 x 30)
BMR = 88.362 + 937.79 + 839.825 - 170.31
BMR = 1695.667
   Result: This man’s BMR is approximately 1696 calories.

Example 2: Female BMR calculation

1. A woman weighs 60 kg, is 165 cm tall, and is 28 years old.
2. Use the female formula:
   BMR = 447.593 + (9.247 x weight) + (3.098 x height) - (4.330 x age)
BMR = 447.593 + (9.247 x 60) + (3.098 x 165) - (4.330 x 28)
BMR = 447.593 + 554.82 + 511.17 - 121.24
BMR = 1392.343
   Result: This woman’s BMR is approximately 1392 calories.

By using the BMR Calculator, you can better understand your caloric needs and make informed decisions about your diet and fitness routine.