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BMR Calculator

Use our calorie-intake calculator to determine your daily caloric needs based on your height, weight, age, and activity level.

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What is BMR? – BMR definition

Basal metabolic rate (BMR) is the number of calories that your body needs to perform its most basic functions. This includes breathing, circulation, and cell production . This is what you would normally refer to as your “metabolism”.

What is the difference between BMR and RMR?

BMR stands for basal metabolic rate, while RMR stands for resting metabolic rate. While these two seem similar, there are slight differences between them.

While BMR refers to the number of calories required for your body’s basic functions at rest, RMR measures the number of calories your body burns at rest.

How is basal metabolic rate (BMR) calculated?

One popular way to measuring the BMR is the Harris-Benedict formula, calculated using the following equation:
Women: BMR = 655 + (9.6 × weight in kg) + (1.8 × height in cm) – (4.7 × age in years)
Men: BMR = 66 + (13.7 × weight in kg) + (5 × height in cm) – (6.8 × age in years)
You can also use our BMR calculator <hyperlink> for a simpler and easier method.

How is basal metabolic rate (BMR) calculated?

One popular way to measuring the BMR is the Harris-Benedict formula, calculated using the following equation:
Women: BMR = 655 + (9.6 × weight in kg) + (1.8 × height in cm) – (4.7 × age in years)
Men: BMR = 66 + (13.7 × weight in kg) + (5 × height in cm) – (6.8 × age in years)
You can also use our BMR calculator <hyperlink> for a simpler and easier method.

How are BMR and lean body mass related?

Studies show that the more lean body mass you have, the greater your BMR will be. Your lean body mass makes up part of your body composition – your body fat percentage versus lean tissue or non-fat mass.

To grow your metabolism, you need to improve your body composition – by increasing your lean body mass. This can be achieved by doing strength training and consuming more protein in your diet.

What is the difference between BMR and TDEE?

If your BMR estimates your minimum calories for your body’s basal functions, Total Daily Energy Expenditure (TDEE) measures how many calories you burn each day, including physical activity.

Will calculating BMR help me lose weight?

Your basal metabolic rate is a starting point in determining your weight loss and nutrition goals. If you’re doing calorie counting, your BMR is needed to calculate your TDEE, so you can measure how many calories you need to consume to lose weight.

Sources

Cunningham JJ. (1991).Body composition as a determinant of energy expenditure: a synthetic review and a proposed general prediction equation. Am J Clin Nutr. Retrieved 8 June 2021 from https://pubmed.ncbi.nlm.nih.gov/1957828/ Buch, A., Diener, J., Stern, N., Rubin, A., Kis, O., Sofer, Y., Yaron, M., Greenman, Y., Eldor, R., & Eilat-Adar, S. (2021).

Comparison of Equations Estimating Resting Metabolic Rate in Older Adults with Type 2 Diabetes. Journal of clinical medicine, 10(8), 1644. Retrieved 8 June 2021 from https://pubmed.ncbi.nlm.nih.gov/33921537/

Calorie Calculator. National Academy of Sports Medicine. Retrieved 8 June 2021 from https://www.nasm.org/resources/calorie-calculator

Resting Metabolic Rate: How to Calculate and Improve Yours. National Academy of Sports Medicine. Retrieved 8 June 2021 from https://blog.nasm.org/nutrition/resting-metabolic-rate-how-to-calculate-and-improve-yours