The minimum calories your body needs to sustain life at complete rest.

Mifflin-St Jeor formula: Male = 10×weight+6.25×height−5×age+5; Female = 10×weight+6.25×height−5×age−161.

Short-term weight loss is possible, but long-term it causes muscle loss and metabolic slowdown.

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BMR Calculator

Calculate BMR (Basal Metabolic Rate) and TDEE (Total Daily Energy Expenditure)

Gender

Male Female

Age (years)

Height (cm)

Weight (kg)

Activity Level

💡 BMR Notes

BMR: Minimum calories needed to sustain life at complete rest
TDEE: BMR × activity factor — total calories burned per day
Eating 500 kcal less per day results in ~0.5 kg weight loss per week
Uses Mifflin-St Jeor formula (widely considered the most accurate)

Frequently Asked Questions

What is basal metabolic rate (BMR)?

The minimum calories your body burns at complete rest to sustain life — used for breathing, maintaining body temperature, and organ function.

What is the BMR formula?

The Mifflin-St Jeor formula is the most accurate. Male: 10×weight(kg)+6.25×height(cm)−5×age+5; Female: 10×weight+6.25×height−5×age−161.

Will I lose weight if I eat less than my BMR?

You may lose weight short-term, but long-term it causes muscle loss and metabolic slowdown. Consult a professional before setting your calorie target.