BMR Calculator

Calculate your Basal Metabolic Rate - the calories your body burns at complete rest.

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What is Basal Metabolic Rate (BMR)?

Your Basal Metabolic Rate (BMR) represents the minimum amount of energy (calories) your body needs to sustain essential life functions while completely at rest. This includes respiration, blood circulation, cellular repair, brain activity, and temperature regulation.

Even if you stay in bed all day, your body burns this baseline number of calories. Understanding your BMR is the vital foundation for calculating your Total Daily Energy Expenditure (TDEE) and tailoring a sustainable weight loss, maintenance, or muscle-gain nutrition plan.

사용 방법

BMR is measured after 8 hours of sleep and 12 hours of fasting in a dark room. RMR (Resting Metabolic Rate) is measured under less strict conditions. They are similar but BMR is slightly lower.

작동 방식

Calculate your Basal Metabolic Rate - the calories your body burns at complete rest.

공식 / 계산 방법

This calculator uses standard mathematical formulas for accurate results.

예시

Try the calculator above with your own values to see personalized results.

자주 묻는 질문

What is the difference between BMR and RMR?

BMR is measured after 8 hours of sleep and 12 hours of fasting in a dark room. RMR (Resting Metabolic Rate) is measured under less strict conditions. They are similar but BMR is slightly lower.

Which formula is most accurate?

The Mifflin-St Jeor equation is generally considered the most accurate for most people. The Katch-McArdle formula is more accurate if you know your body fat percentage.

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