This calculator is provided free of charge. The tool is not relevant to children or pregnant women.

The equations applied here are general equations that generalize between people and as such may not be accurate in all cases. This calculator calculates some additional pieces of weight loss information such as your BMI and recommendations on the number of calories you should consume.Ī lot of the research for this calculator was based on the Wikipedia entries relating to Basal Metabolic Rate and the Harris Benedict Equation.ĭisclaimer: This tool is provided for informational purposes only. You might also like to take a look at our more general weight loss calculator. You exercise moderately (3-5 days per week) The activity levels and their factors are as follows: Activity Level These estimates are simply computed by multiplying your BMR by the factor specific to an activity level. The BMR calculator will then adjust your BMR by various factors to show estimates of the calories you burn a day based on your activity level. One of the useful properties of computing such an estimate of your BMR is that you can then use this to esitimate the calories you burn a day. The calculator will return an estimate of your BMR using both of these methods. Some studies have shown the equation by MD Miffin and ST St Jeor to be more accurate here, while the Harris Benedict equation was created in 1919 and has historical significance. Similarly to the above formula by MD Miffin and ST St Jeor, weight is in Kilograms, height is in centimeters and age is in years. s is a factor to adjust for gender and adopts the value +5 for males and -161 for females.Īs an alternative method of calculation, the Harris Benedict equations adopt separate equations for men and women as follows:īMR = (13.7516 x weight + 5.0033 x height – 6.755 x age + 66.473) kcal/dayīMR = (9.5634 x weight + 1.8496 x height – 4.6756 x age + 655.0955) kcal/day Here, weight is in Kilograms, height is in centimeters and age is in years. The equation introduced by MD Miffin and ST St Jeor is as follows:īMR = (9.99 x weight + 6.25 x height – 4.92 x age + s ) kcal/day These equations allow an approximation of your BMR to be computed from the above data. There are various methods to calculate an estimate of your BMR and the calculator will return two estimates based on the formulas developed by MD Mifflin and ST St Jeor as well as the Harris-Benedict equation. You are basically looking at the calories you burn a day when at rest with no digestion occurring. “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)”

Your Basal Metabolic Rate is defined on Wikipedia as: The calculator will then calculate an estimate of your BMR and adjust you BMR by various factors to allow you to see an estimate of the calories you burn a day based on your level of activity. To use the calculator, simply input details about yourself such as you age, gender, weight and height. The BMR calculator allows you to calculate your Basal Metabolic Rate (BMR) as well as other information relating to the calories you burn a day.

Harris benedict equation for female