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Your Basal Metabolic Rate (BMR), and the related Resting Metabolic Rate (RMR), refer to the amount of calories your body burns each day at rest for the basic body functions such as breathing, heart beat and circulation, nervous system, and other functions along these lines.
One of the most common calculations used to determine a persons BMR is to utilize a formula called the Harris-Benedict equation that accounts for variables such as gender, age, height, and average activity level to more closely estimate to each individual.
Below is a Basal Metabolic Rate Calculator based on this formula:
estimated caloric expenditure based on your
gender, your age, your height, your weight
and your activity level.
If you are curious about what the exact calculation is that this calculator is based on here is a brief summary:
Step 1 – Calculating Your BMR
| Men | BMR = 66.5 + ( 13.75 x weight in kg ) + ( 5.003 x height in cm ) - ( 6.775 x age in years ) |
| Men | BMR = 66 + ( 6.23 x weight in pounds ) + ( 12.7 x height in inches ) - ( 6.76 x age in years ) |
| Women | BMR = 655.1 + ( 9.563 x weight in kg ) + ( 1.850 x height in cm ) - ( 4.676 x age in years ) |
| Wwomen | BMR = 655 + ( 4.35 x weight in pounds ) + ( 4.7 x height in inches ) - ( 4.7 x age in years ) |
Step 2 – Applying Your Activity Level
| Little to no exercise | Daily calories needed = BMR x 1.2 |
| Light exercise (1–3 days per week) | Daily calories needed = BMR x 1.375 |
| Moderate exercise (3–5 days per week) | Daily calories needed = BMR x 1.55 |
| Heavy exercise (6–7 days per week) | Daily calories needed = BMR x 1.725 |
| Very heavy exercise (twice per day, extra heavy workouts) | Daily calories needed = BMR x 1.9 |
Please note that these calculations are meant as general guidelines. Every person is different and there are many variables that go into your metabolism. This Calorie Burning Calculator is intended to be tool to help you better understand your approximate calorie burning potential so you can make the correct adjustments to your daily calorie intake.
Information on this page should not be taken as medical advice, and it’s recommended that if you are serious about learning what your BMR and particularly about monitoring your calorie intake, you should speak with your doctor or consult with weight management specialist in your area that often have equipment to most accurately determine your Basal Metabolic Rate.
Many clinics have fat testing and Metabolic testing equipment in their office so you can take into account other variables not covered on these more broad calculations such as the amount of lean body mass you have which effects your metabolism as well as other more exact variables tailored to your unique body make up.
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