BMR Calculator
Mifflin-St Jeor: Male = 10W + 6.25H − 5A + 5; Female = 10W + 6.25H − 5A − 16110×70 + 6.25×170 − 5×30 + 5 = 700 + 1062.5 − 150 + 5 = 1617.5
Free online tool
BMR Calculator
Enter your age, gender, height and weight to estimate how many calories you burn each day at complete rest.
Instant calculation
Calculate Your BMR
Enter your details to find your basal metabolic rate.
Your result
Calculation
Your numbers stay in this browser. Nothing is uploaded or saved.
Three clear steps
How to use this calculator
- 01
Enter personal details
Type your age, select gender, enter height and weight.
- 02
Calculate BMR
See your estimated basal metabolic rate in calories per day.
- 03
Use with TDEE
Multiply BMR by your activity level to find total daily energy expenditure.
The formula
How this calculation works
Uses the Mifflin-St Jeor equation, the most accurate BMR formula for most people. W=weight(kg), H=height(cm), A=age.
Check the method
Worked examples
Each example follows the same formula used by the calculator.
What is the BMR for a 30-year-old male, 170 cm, 70 kg?
10×70 + 6.25×170 − 5×30 + 5 = 700 + 1062.5 − 150 + 5 = 1617.5≈ 1,618 calories/dayCommon questions
Questions about this calculation
What is the BMR Calculator?
The BMR Calculator helps you calculate your Basal Metabolic Rate — the calories your body burns at rest. Enter your values and select Calculate to get an instant result.
How is the result calculated?
Uses the Mifflin-St Jeor equation, the most accurate BMR formula for most people. W=weight(kg), H=height(cm), A=age.
Can you show an example?
Example: What is the BMR for a 30-year-old male, 170 cm, 70 kg? — ≈ 1,618 calories/day.
Is my data saved when I use the BMR Calculator?
No. All calculations run locally in your browser. Your inputs and results are never uploaded, stored or shared with anyone.
Is the BMR Calculator free to use?
Yes. The BMR Calculator is completely free. No account, sign-up or payment is required. It works on mobile, tablet and desktop.
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