Estimate your Basal Metabolic Rate — calories burned at rest.
Health figures are processed locally and never stored.
Understanding your result
BMR is the baseline; your total daily needs are higher once activity is included. Use the TDEE Calculator to add activity.
Formula and method
Mifflin-St Jeor: BMR = 10 × kg + 6.25 × cm − 5 × age + s, where s = +5 for males and −161 for females.
Worked example
A 30-year-old male, 175 cm and 70 kg, has a BMR of about 1,649 calories per day.
How to use this tool
- Choose your gender and enter your age.
- Pick metric or imperial units.
- Enter your height and weight.
- Press Calculate.
Common mistakes to avoid
- Treating BMR as your full daily calorie need — it excludes activity.
About the BMR Calculator
Your Basal Metabolic Rate (BMR) is the energy your body uses at complete rest to keep functioning. This calculator uses the well-regarded Mifflin-St Jeor equation.
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Frequently asked questions
Is BMR the same as TDEE?
No. TDEE is BMR multiplied by an activity factor and reflects your real daily energy use.