BMR Calculator
Free online BMR Calculator.
Calculator
How to Use
- Enter the required values
- Click Calculate to see the result
- Review the detailed output
Formula
Mifflin-St Jeor: Men: 10xW(kg) + 6.25xH(cm) - 5xA + 5. Women: 10xW + 6.25xH - 5xA - 161. Result = calories burned at rest per day.
Example Calculations
Male BMR
Input: Male, 30 years, 180 lbs, 5'10"
Result: BMR: 1,787 cal/day
Female BMR
Input: Female, 25 years, 140 lbs, 5'5"
Result: BMR: 1,404 cal/day
With Activity
Input: Male BMR: 1,787, Moderately active (1.55)
Result: TDEE: 2,770 cal/day
About This Calculator
Free online bmr calculator. Calculate instantly in your browser with our easy-to-use tool. No sign-up required.
Our bmr calculator is free, easy to use, and provides instant results. All calculations are performed in your browser for privacy and speed.
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Frequently Asked Questions
What is BMR?
Basal Metabolic Rate: calories burned at rest for basic functions. 60-75% of daily expenditure.
How is BMR calculated?
Mifflin-St Jeor: men = 10xweight(kg) + 6.25xheight(cm) - 5xage + 5; women subtract 161.
BMR vs TDEE?
BMR is rest calories. TDEE includes activities. TDEE = BMR x activity factor.
Can I increase BMR?
Build muscle, strength train, eat adequate protein, and sleep well.
Why might BMR be inaccurate?
Formulas use averages and may not account for genetics, hormones, or body composition.