Basal Metabolic Rate (Mifflin-St Jeor)

Also known as: BMR Formula, Mifflin-St Jeor Equation, Resting Metabolic Rate

BMR = 10w + 6.25h - 5a + s

BMR = 10×weight(kg) + 6.25×height(cm) - 5×age + s

What It Calculates

Estimates the number of calories your body burns at rest to maintain basic life functions (breathing, circulation, cell production). This is your baseline — you burn more than this each day through activity.

variables

Symbol	Name	Unit	Description
w	Weight	kg	Body weight in kilograms
h	Height	cm	Height in centimeters
a	Age	years	Age in years
s	Sex Factor	—	+5 for males, -161 for females

Worked Examples

1BMR = 10(80) + 6.25(180) - 5(30) + 5

2BMR = 800 + 1125 - 150 + 5 = 1,780 cal/day

Result: 1,780 cal/day

Try a Calculator

bmr calorie calculator tdee

Related Formulas

Total Daily Energy Expenditure (TDEE)

TDEE = BMR × Activity Factor

Body Mass Index (BMI)

BMI = weight(kg) / height(m)²

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