Find Your Resting Calorie Needs
Basal Metabolic Rate, or BMR, is the number of calories your body burns at complete rest to keep you alive, including breathing, circulation and cell repair. Knowing your BMR gives you a clear starting point for any diet plan.
Use the free BMR Calculator above to find your resting calorie baseline in seconds. Enter your sex, age, weight and height, then press Calculate to see your BMR.
Table of Contents
What is a BMR Calculator?
A BMR Calculator estimates the calories your body burns at complete rest, before any activity is counted. It uses the Mifflin-St Jeor equation, the most widely used BMR formula in dietetics.
Men: BMR = 10 x weight(kg) + 6.25 x height(cm) – 5 x age + 5. Women: BMR = 10 x weight(kg) + 6.25 x height(cm) – 5 x age – 161.
How to Use the BMR Calculator (Step by Step)
- Select your sex.
- Enter age, weight in kg and height in cm.
- Press Calculate.
- Use the result as your resting calorie baseline; multiply by an activity factor to get daily needs (TDEE).
Example Calculation
Male, 30, 70 kg, 175 cm: BMR = 10 x 70 + 6.25 x 175 – 5 x 30 + 5 = 1,648.75, which is 1,649 kcal/day.
Features of the BMR Calculator
- Mifflin-St Jeor accuracy
- Separate men/women formulas
- Instant result with exact decimal
- Free, no signup
- Mobile friendly
Benefits of Using a BMR Calculator
- Know your resting baseline
- Starting point for any diet plan
- Pairs with TDEE for full daily needs
- Results in seconds
Final Thoughts
Your BMR is a practical starting point for any diet plan. Use it as your resting calorie baseline, then try the TDEE Calculator for your full daily needs and the Loan EMI Calculator for more useful free tools.
Frequently Asked Questions (FAQs)
What does BMR mean?
BMR is the energy your body needs at complete rest for breathing, circulation and cell repair – before any activity is counted.
BMR vs TDEE – what is the difference?
BMR is rest-only calories. TDEE is BMR multiplied by your activity level, so TDEE is always higher.
Why does BMR fall with age?
Muscle mass usually drops with age, and muscle burns more energy at rest, so the formula subtracts 5 kcal per year of age.
Can I eat exactly my BMR to lose weight?
Eating at BMR level usually creates a deficit for active people, but very low intakes should be supervised by a professional.