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Basal Metabolic Rate (BMR) Calculator

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Your BMR (Basal Metabolic Rate) is the estimated minimum level of energy required to sustain the body's vital functions when at rest. The Harris-Benedict formula is used to calculate the BMR (Basal Metabolic Rate). By using the Basal Metabolic Rate (BMR) Calculator you can get an estimated amount of calories your body burns per day just from basic body functions. This will help you to determine how many more calories you are in excess from your diet and will help you to set realistic weight loss and exercise goals.

 

Basal metabolic rate is the amount of energy expended while at rest in a neutrally temperate environment, in the post-absorptive state (meaning that the digestive system is inactive, which requires about twelve hours of fasting in humans). The release of energy in this state is sufficient only for the functioning of the vital organs, such as the heart, lungs, brain and the rest of the nervous system, liver, kidneys, sex organs, muscles and skin.

 

Fill in the details below and click the calculate button to calculate your BMR. Remember, BMR is only the amount of calories expended 'to live'.

 

Enter Your Age(years)
Enter Your Weight(lbs)
Enter Your Height(inches)
 
   
BMR Result(calories/day)
Men
Women
   
 

 

Note: BMR calculators should only be used to provide a rough guideline on daily energy expended. Actual values cannot be attained using such calculators, and may be quite inaccurate depending on several factors such as geographic location, body-type, diet, body composition, supplementation and some genetic factors. Values which extend +/- 15% above and below your calculated BMR may be a more accurate representation of your actual BMR range as daily fluctuations are constant and your BMR is rarely the same on a daily basis.

 

Why is calculating your Basal Metabolic Rate Important?

Your BMR, or basal metabolic rate (metabolism), is the energy (measured in calories) expended by the body at rest to maintain normal bodily functions. This continual work makes up about 60-70% of the calories we use ("burn" or expend) and includes the beating of our heart, respiration, and the maintenance of body temperature. Your BMR is influenced by a number of factors, including age, weight, height, gender, environmental temperature, dieting, and exercise habits.

 

Because of the increased activity of cells undergoing division, the younger the person, the higher (faster) the metabolism. And the taller and heavier a person is, the faster their metabolism. Because of the greater percentage of lean muscle tissue in the male body, men generally have a 10-15% faster BMR than women. Restrictive and traditional diets may cause your BMR to drop as much as 20%. People living in tropical or very cold environments generally have BMR's 5-20% higher than those living in more temperate climates. In general, depending on the intensity and duration, consistent exercise will also increase your BMR.

 

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