Resting metabolic rate (also called RMR) is the rate at which your body burns energy when it is at complete rest. You can calculate your resting metabolic rate to see how many calories your body needs to perform basic functions like breathing and circulation. Your RMR or resting metabolic rate is part of your total daily energy expenditure (TDEE) or the total number of calories you burn each day.

RMR Calculator – Resting Metabolic Rate