BMR Calculator
Calories your body burns at rest, plus daily expenditure by activity.
Your result appears here
Fill in the fields on the left and press Calculate. The answer, the breakdown and a copy button all land in this card.
How it is calculated
Men: BMR = 10w + 6.25h − 5a + 5; Women: BMR = 10w + 6.25h − 5a − 161
w is weight in kg, h is height in cm and a is age in years. TDEE = BMR × activity factor.
Worked example
A 30-year-old man, 70 kg and 170 cm: 700 + 1062.5 − 150 + 5 = 1,617.5 kcal BMR, shown as 1,618. At a light activity factor of 1.375 his daily use is about 2,224 kcal.
Questions people ask
BMR is what you burn doing nothing at all. TDEE adds movement, digestion and exercise, and is the number to compare your food intake against.
Mifflin-St Jeor is the current default for healthy adults. Any equation is an estimate — track your weight for a few weeks and adjust the number to reality.