It is important to remember that proper diet and exercise is largely accepted as the best way to lose weight. For example, if a person has an estimated allotment of 2,500 calories per day to maintain body-weight, consuming 2,000 calories per day for one week would theoretically result in 3,500 calories (or 1 pound) lost during the period. As such, in order to lose 1 pound per week, it is recommended that 500 calories be shaved off the estimate of calories necessary for weight maintenance per day. 1 pound, or approximately 0.45 kg, equates to about 3,500 calories. This value is multiplied by an activity factor (generally 1.2-1.95), dependent on a person's typical levels of exercise, in order to obtain a more realistic value for maintaining body-weight (since people are less likely to be at rest throughout the course of an entire day). The value obtained from these equations is the estimated number of calories a person can consume in a day to maintain their body-weight, assuming they remain at rest. The three equations used by the calculator are listed below: Of these equations, the Mifflin-St Jeor Equation is considered the most accurate equation for calculating BMR with the exception that the Katch-McArdle Formula can be more accurate for people who are leaner and know their body fat percentage. The Katch-McArdle Formula is slightly different in that it calculates resting daily energy expenditure (RDEE), which takes lean body mass into account, something that neither the Mifflin-St Jeor nor the Harris-Benedict Equation do. The Mifflin-St Jeor Equation also calculates BMR, and has been shown to be more accurate than the revised Harris-Benedict Equation. It was revised in 1984 to be more accurate and was used up until 1990, when the Mifflin-St Jeor Equation was introduced. The Harris-Benedict Equation was one of the earliest equations used to calculate basal metabolic rate (BMR), which is the amount of energy expended per day at rest. This Calorie Calculator is based on several equations, and the results of the calculator are based on an estimated average. Related: BMI Calculator | Body Fat Calculator | Ideal Weight Calculator The following converter can be used to convert between Calories and other common food energy units.
At least 60% of all energy used by everyone goes into basal metabolism. Truly, we burn most of our energy in “basal” mode. That’s what Basal Metabolic Rate (BMR) is! In fact, over time, this sort of activity burns the most calories. Utterly sedentary actions like simply reading these words is using energy. Just breathing in, and breathing out, is burning calories. Exercise is Good, but not Necessary, to burn kJsĪll this to say, your body burns kilojoules even without exercising. That person breathes more and has a higher BMR because a toned, fit body simply needs more energy.īesides muscle tone, body size, age, the ambient temperature, genes, hormone balance and other factors all affect the rate of energy burn at a basic level. Think about it: a person used to gym training and exercise simply breathes harder and stronger than a person with poor muscle tone. In reality, no two people can have the exact, identical BMRs.
However, such a case of two people with the same metrics shows the limitations of any BMI-like formula. Our BMR Calculator applies the Harris Benedict formula to your height, weight, gender, and age, so two different people with the exact same weight, height, gender, and age will have identical results. Different People, Different BMR Calculator Results They stay functioning and using energy for as long as you are alive.īMR is your heart, lungs, liver and other essential organs just doing their thing. Think about what your body is doing when you are lying in bad, gazing up at the ceiling.Įven though you are not “doing anything”, your heart, liver, kidneys, brain and all the other organs are fully functional. BMR keeps Running for as long as you Live…
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