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BMR Calculator | Basal Metabolic Rate Calculator
Calculate your Basal Metabolic Rate (BMR) using the Mifflin-St Jeor equation. Find out how many calories your body burns at rest.
BMR Calculator
Calculate how many calories your body burns at rest (Basal Metabolic Rate).
How BMR is Calculated
We use the Mifflin-St Jeor equation (1990): Men: BMR = 10 × weight(kg) + 6.25 × height(cm) - 5 × age + 5. Women: BMR = 10 × weight(kg) + 6.25 × height(cm) - 5 × age - 161. This is the minimum energy your body needs to maintain vital functions while at complete rest.
FAQ
What is BMR?
BMR (Basal Metabolic Rate) is the number of calories your body burns at complete rest to maintain vital functions like breathing, circulation, and cell production. It typically accounts for 60-75% of total daily calorie expenditure.
What is the difference between BMR and TDEE?
BMR is calories burned at rest. TDEE (Total Daily Energy Expenditure) adds the calories from physical activity and digestion. TDEE = BMR × activity multiplier.
Can I increase my BMR?
Yes. Building lean muscle mass is the most effective way to increase BMR, as muscle tissue burns more calories at rest than fat tissue. Each kg of muscle burns approximately 13 kcal/day at rest.
Should I eat below my BMR?
Generally no. Eating below your BMR for extended periods can slow metabolism, cause muscle loss, and lead to nutrient deficiencies. A calorie deficit should typically be calculated from your TDEE, not your BMR.
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