Over the years, the Harris-Benedict equation has gone through revisions to more closely approximate BMR. ![]() Thus, this individual has a BMR of roughly 1,937 calories. To convert inches to centimeters, multiply inches by 2.54.įor example, take a 25-year-old, 6-foot-tall (72 inches) male that weighs 180 pounds. To convert pounds to kilograms, divide the weight in pounds by 2.2. If you are using imperial units, you can easily convert between pounds to kilograms and inches to centimeters. The equation was derived in 1919 and is still one of the most widely used BMR formulas. The first formula created to calculate BMR was the Harris-Benedict formula. Taller individuals or those who weigh more have a larger body mass, and therefore have higher BMRs as well. In general, this gives them a slightly higher basal metabolic rate. All of these factors play a role in how much energy your body uses at rest.įor example, as far as gender goes, men tend to have more lean muscle mass than women. However, you can still calculate your BMR using predictive equations that rely on height, weight, age, and gender.īMR is based on height, weight, age, and gender. Unfortunately, there are limitations to indirect calorimetry, such as cost and accessibility, that make it not possible for most people to do. These labs measure the heat coming off of your body, which correlates to the number of calories you burn at rest. The only way to determine your true BMR is to have your metabolic rate measured by lab analysis through either direct or indirect calorimetry. ![]() So BMR includes all of your normal physiologic functions, such as respiration, heart rate, blood flow, and brain activity.Įveryone has their own individual BMR based on their unique physiologic and biological makeup. Even when you aren’t actively engaged in physical activity, your body still uses energy (AKA calories) to keep your body running. This is the energy that your body uses to function when completely at rest. How to Calculate BMR & TDEE Using the Harris-Benedict Equationīasal metabolic rate, or BMR, is also known as resting metabolism.
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