Your Basal Metabolic Rate:

How BMR Is Calculated

BMR is calculated using a scientifically validated equation known as the Mifflin-St Jeor Formula:

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

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

This formula is widely used in nutrition and fitness research and is considered one of the most accurate methods for estimating basal metabolic rate in healthy adults.

How to Use the BMR Calculator

1、Select your gender.

2、Enter your age.

3、Input your height and weight.

4、Click Calculate.

5、Instantly view your estimated BMR value.

Your result shows the calories your body needs daily to maintain essential functions.

What Is BMR?

BMR (Basal Metabolic Rate) is the minimum amount of energy your body requires to function at rest. It does not include calories burned through physical activity, digestion, or exercise.

In simple terms:

BMR = calories your body burns doing nothing

It accounts for 60–75% of your total daily calorie expenditure.

Factors affecting BMR include age, gender, body composition, and genetics.

Notice

This BMR calculator is for informational purposes only and does not provide medical advice. BMR represents calories needed at rest and does not include physical activity. For personalized nutrition or weight management guidance, consult a qualified healthcare professional.

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BMR FAQ

What is a normal BMR? +
There is no single normal BMR value. Most adults have a BMR between 1,200 and 2,000 calories per day, depending on age, gender, height, weight, and body composition.
Is BMR the same as BMI? +
No. BMR estimates how many calories your body needs at rest, while BMI is a ratio of height and weight used to categorize body weight. They serve different purposes.
Does BMR decrease with age? +
Yes. BMR typically decreases with age due to muscle loss and metabolic changes. Maintaining muscle mass through strength training may help slow this decline.
Should I eat fewer calories than my BMR to lose weight? +
Eating fewer calories than your BMR is not recommended. Sustainable weight loss should be based on total daily energy expenditure (TDEE), not BMR alone.
How accurate is this BMR calculator? +
This calculator uses the Mifflin-St Jeor equation, which is widely regarded as one of the most accurate BMR estimation formulas for adults.
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