How to Calculate an RMR Online

Online resting metabolic rate (RMR) calculators are commonplace on the Internet, and they all work basically the same way. They calculate a formula using your specific variables such as gender, weight and age to determine how many calories you burn on average per day while you are at rest. These calculations are not scientifically accurate, but merely estimates to help give you an idea what your body burns at rest. The formulas vary slightly from site to site, so you might not get a consistent result.

Instructions

• 1

  Go to the RMR calculator on the Sharp Web Labs site. The calculator at this site requires you to enter your height in inches, your weight in pounds and your age in years. It also asks for your gender, but that doesn't seem to have any bearing on the calculation. For example, a 30-year-old man who is 6 feet tall and weighs 170 lbs. has an RMR of 1,566.24 calories per day, according to the site, and a woman of the same dimensions has the same RMR.

• 2

  Visit the Calories Per Hour website. This calculator also asks for your gender, age, height and weight, but it gives you the option of using both English and metric measurements. It also uses a slightly different formula for its calculation. A 30-year-old man who is 6 feet tall and weighs 170 lbs. has an RMR of 1,769 calories per day, according to the site.

• 3

  Go to the Start Losing Weight Today website. This calculator uses the same variable information and also allows you to enter your info in English or metric measurements. It, too, uses a different formula for its calculation. The same 6-foot, 170-lb., 30-year-old man burns 1,836 calories a day while at rest, according to the site.