Simple BMR Calculator
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- October 26, 2009 Updated
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Basal metabolic rate or BMR, 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). This is a definition that you can easily find in internet or from wikipedia. The release of energy in this condition is sufficient only for the functioning of the people vital organs, such as the heart, lungs, brain, liver, kidneys, sex organs, muscles and skin. People BMR is usually 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. And when you go on restrictive, traditional diets, your BMR can drop by 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 can also increase your BMR.
This excel calculator is created using Mifflin - St Jeor equation. With this equation, the Basal Metabolic Rate (BMR) can be calculated with the following formula.
- for man (metric) : BMR = 10 * weight(kg) + 6.25 * height(cm) - 5 * age(y) + 5
- for woman (metric) : BMR = 10 * weight(kg) + 6.25 * height(cm) - 5 * age(y) - 161
You can use this tool to calculate your BMR or you can learn how the formula implemented in this excel calculator.
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