Resting Metabolic Rate (RMR) Calculator

Resting Metabolic Rate (RMR)

Resting Metabolic Rate or RMR is an important indicator to get an idea of the energy required by your body to perform essential functions during rest. It helps you to manage your calories and the nutritional requirements of your body effectively.

What is Resting Metabolic Rate?

RMR or Resting Metabolic Rate indicates the amount of calories your body requires to perform the most basic functions of the body while resting. It includes-

✔      Breathing

✔      Heart beating

✔      Blood circulation

✔      Functions of the brain

✔      Digestion of food and

✔      Functions of vital body organs

What Can Affect Resting Metabolic Rate?

Resting Metabolic Rate is not a fixed parameter. There are a number of factors that can affect the RMR. Here is a quick overview.

What Is The Difference Between Resting Metabolic Rate And BMR (Basal Metabolic Rate)?

Well, Resting Metabolic Rate and Basal Metabolic Rate both measure your ccalorierequirement when you are resting. But they are not the same. Here is how they differ from each other.

Duration of Measurement:

• BMR requires 24 hours of rest and an overnight fast.
• RMR requires only a 15-minute relaxation.

Calorie:

• BMR does not calculate calories used for food digestion
• RMR calculates calories burned during digestion

Reliability for Daily Estimation:

• BMR gives a precise calculation under controlled conditions.
• RMR is more reliable for everyday calorie estimation. That is because it shows the typical state of the body, including digestion.

How to Calculate Resting Metabolic Rate?

You can calculate the RMR by using one of the equations mentioned below.

1. Mifflin-St. Jeor Equation

Men: RMR = 5 + (10 × weight in kg) + (6.25 × height in cm) − (5 × age in years)

Women: RMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age in years) − 161

2. Harris-Benedict Equation

Men: RMR = 88.362 + (13.397 × weight in kg) + (4.799 × height in cm) − (5.677 × age in years)

Women: RMR = 447.593 + (9.247 × weight in kg) + (3.098 × height in cm) − (4.330 × age in years)

Example of RMR calculation using the Mifflin-St. Jeor Equation

Given,

Age= 30 years

Sex= Female

Weight: 70 kg

Height= 165 cm

So, RMR = (10 × 70) + (6.25 × 165) − (5 × 30) − 161
                = 700 + 1031.25 − 150 − 161
                = 1420.25 kcal/day

Calculate your resting metabolic rate, the number of calories you burn at rest. Helps with weight management and understanding your metabolism. Find out how many calories your body burns at rest with our free RMR Calculator. Understand the difference between RMR and BMR, and estimate your daily energy needs. Includes tools for BMI and total calorie calculation to support your weight loss or fitness goals.