BMR Calculator

Imperial

Calculate your BMR using imperial units.

Basal Metabolic Rate (BMR)

Basal metabolic rate (BMR) estimates the number of calories your body burns over a 24-hour period while at rest. For your body to be truly “at rest,” your digestive system must be inactive, which typically requires a 12-hour fasting period, and your external environment needs to be a neutral temperature. BMR comprises the largest portion of most people’s TDEE.

How to Calculate BMR

The Harris-Benedict equation is a formula used to estimate the number of calories a person needs to maintain their weight. It takes into account your age, gender, weight, height, and activity level. The equation is as follows:

  • 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)

Note: The values for men and women are different because men typically have more muscle mass, which burns more calories at rest.

How to Use the BMR Calculator

To use the BMR calculator, follow these steps:

  • Select your gender and enter your age, weight, and height.
  • Select your activity level from the dropdown menu.
  • Click the “Calculate“ button to see your BMR.