Basal Metabolic Rate (BMR) Calculator
Understanding Basal Metabolic Rate (BMR)
Basal Metabolic Rate (BMR) is the number of calories your body needs to perform basic life-sustaining functions like breathing, circulation, cell production, and nutrient processing while at rest.
This calculator offers two common formulas:
Mifflin-St Jeor Formula (often considered more accurate):
- Men: BMR = (10 × weight in kg) + (6.25 × height in cm) – (5 × age in years) + 5
- Women: BMR = (10 × weight in kg) + (6.25 × height in cm) – (5 × age in years) – 161
Revised Harris-Benedict Formula (Original 1919, Revised 1984):
- Men: BMR = 88.362 + (13.397 × weight in kg) + (4.799 × height in cm) – (5.677 × age in years)
- Women: BMR = 447.593 + (9.247 × weight in kg) + (3.098 × height in cm) – (4.330 × age in years)
Your BMR can be a starting point for determining your Total Daily Energy Expenditure (TDEE) by factoring in your activity level.
Disclaimer: These formulas provide estimates. Individual metabolic rates can vary. For personalized advice, consult a healthcare professional or registered dietitian.
Estimate your daily calorie needs at rest.
Note: This calculator provides an estimate. Actual BMR can vary. The Mifflin-St Jeor formula is generally recommended for higher accuracy.
Your Estimated Basal Metabolic Rate:
Calories/day
Calculated using:
Notes:
- BMR is the energy your body burns at complete rest.
- To find your Total Daily Energy Expenditure (TDEE), multiply your BMR by an activity factor (not calculated here).
- These are estimates. Individual metabolic rates vary.
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