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BMR Calculator

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BMR Calculator

As you will see below, a BMR calculator is going to help you answer:

How many calories do I eat to lose weight?  How many calories are needed to lose weight?

If you are wondering how many calories you need to lose weight, this is for you.

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What is BMR? 

BMR stands for Basal Metabolic Rate.

Your basal metabolic rate  or BMR is used interchangeably with your resting metabolic rate (RMR).

What that means is that your BMR is refers to the minimum number of calories required for basic functions at rest.  It is the amount of calories that our body needs to function. 

Since your BMR represents the lowest calorie number that you need for your involuntary body functions, you should NOT consume fewer calories than your BMR.

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What is a good BMR?

In general, about 60% of your total energy needs come from resting metabolism. This varies, of course, depending on your activity level as well as gender and age.

The average BMR for an American woman is around 1,400 calories, while for a man its about 1,800.

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How can you calculate your BMR?

There is an Equation which follows that you can use  to Calculate Your BMR.


For Men

BMR = 88.362 + (13.397 x weight in kg) + (4.799 x height in cm) - (5.677 x age in years)

Women: BMR = 447.593 + (9.247 x weight in kg) + (3.098 x height in cm) - (4.330 x age in years)



BMR = 66.47 + ( 6.24 × weight in pounds ) + ( 12.7 × height inches ) − ( 6.755 × age in years )


BMR = 655.1 + ( 4.35 × weight in pounds ) + ( 4.7 × height inches ) − ( 4.7 × age in years )


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How To Calculate Your Daily Calorie Requirement

When you have calculated your BMR, you will probably want to figure out your daily calorie requirement.  If you wish to calculate your daily calorie needs manually, multiply your BMR by one of the following factors that relate to your level of activity:

Are You

Sedentary (little or no exercise)
Your Calories Per Day = Your BMR x 1.2

Lightly active (light exercise or sports 1-3 days/week)
Your Calories Per Day = Your BMR x 1.375

Moderately active (moderate exercise 3-5 days/week)
Your Calories Per Day = Your BMR x 1.55

Very active (hard exercise 6-7 days/week)
Your Calories Per Day = Your BMR x 1.725

Extremely active (very hard exercise and a physical job)
Your Calories Per Day = Your BMR x 1.9

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