# Basal Metabolic Rate (BMR) Calculator

Basal Metabolic Rate (BMR) Calculator
Age years
Gender
Height
Weight
BMR Formula
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# Basal Metabolic Rate (BMR) Calculator

### BMR Calculator — Measure Your BMR to Lose Weight or Gain weight

BMR calculator helps a lot with losing weight because it gives you the energy required to keep body functions going. The more energy required means you have to deal with the calories. Similarly, you can be aware of illness, stress, and fear before visiting the doctor. Let’s know more about the BMR calculator — how it works, how it can benefit you, and the formulas used.

### What is Basal Metabolic Rate?

Basal Metabolic Rate (BMR) is the energy required by a man or woman when they are in a rest position while the digestive system is not working. It is the same as the car parked, and its BMR will be the amount of gas being consumed at that state. This energy is necessary to maintain the working of our internal body organs, including the heart, brain, liver, kidney, sex organs, muscles, nervous systems, and more. We can conclude that it’s the total number of calories required by a body to perform basic functions to keep a person alive.

### How Does the BMR Calculator Work?

A BMR calculator is very convenient to use because they require basic information that everyone knows about them. Since the calculator features two different unit systems, you should fill them accordingly. For example, if you’re using US units, fill height in feet and inches, weight in pounds. In the case of Metric units, height in centimeters and weight in kilograms is required.

So, all you need to do is put your age in years, select the gender, insert height and weight as per the selected unit system, choose the BMR formula, and hit the calculate button. You have three options for the BMR formula, including Mifflin St Jeor, Revised Harris-Benedict, and Katch McArdle. These formulas will be discussed further, so you can select the one you need.

### BMR Formula

The Harris-Benedict Equation was the first equation introduced but later in 1984, it was revised because of some errors to give more accurate results. This equation was used until, in 1990 Mifflin-St Jeor Equation was introduced. This one showed more accurate results than previous ones while calculating resting daily energy expenditure. Later, the Katch-McArdle Equation went above and beyond by considering body mass which previous ones never did.

Look at these three equations and see how they work.

#### Revised Harris-Benedict Formula:

For Woman:
BMR = 9.247Weight + 3.098Height - 4.330Age + 447.593

For Man:
BMR = 13.397Weight + 4.799Height - 5.677Age + 88.362

#### Katch-McArdle Formula:

BMR = 370 + 21.6(1 - Fat)Weight

#### Mifflin-St Jeor Formula:

For Woman:
BMR = 10W + 6.25Height - 5Age - 161

For Man:
BMR = 10W + 6.25H - 5A + 5

Where:
F = Body Fat in Percentage
A = Age
H = Height in Centimeters
W = Weight in KG

### What Affects my BMR?

BMR results change with a change in metabolic rate. It means when your metabolic rate increases, your BMR also increases. On the other hand, it decreases when the metabolic rate falls. During exercise, illness, fear, and stress, BMR increases as the metabolic rate rises. Since BMR is dependent on more than one factor, including body mass, age, gender, weight, and height, the results fluctuate with change in any of these factors. It’s different for men and women.

### Benefits of Checking BMR

BMR calculator lets you know your current energy requirement, so you can keep checking the results to act accordingly. It helps a lot in losing weight while measuring daily energy. Also, it gives you the state of your body, including stress, fear, and illness, so you can take the necessary measurements to deal with the situation.

### Final Words

BMR helps a lot dealing with your basal metabolic rate, so you can keep everything going healthy. Consider it a great tool to check your mental and physical state to take necessary actions to overcome the unhealthy situation.