BMR Calculator – Calculate Your Basal Metabolic Rate | CalHub

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BMR Calculator

Calculate your Basal Metabolic Rate (BMR) and daily calorie needs.


Your BMR

0 kcal/day

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What Is BMR (Basal Metabolic Rate)?

BMR (Basal Metabolic Rate) is the number of calories your body burns at complete rest to maintain essential life-sustaining functions such as breathing, blood circulation, temperature regulation, and cell repair.

Knowing your BMR helps you understand your daily calorie needs and is widely used in weight loss, weight gain, and fitness planning.

How to Use the CalHub BMR Calculator

  1. Enter your weight in kilograms (kg).
  2. Enter your height in centimeters (cm).
  3. Enter your age in years.
  4. Select your gender.
  5. Click “Calculate BMR” to instantly see your Basal Metabolic Rate.

How BMR Is Calculated (Formula)

The CalHub BMR Calculator uses the Mifflin–St Jeor equation, which is considered one of the most accurate formulas for estimating BMR in adults.

  • For Men: BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) + 5
  • For Women: BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) − 161

Why Use the CalHub BMR Calculator?

  • 100% Free: No sign-up required.
  • Instant Results: Accurate calorie calculations in seconds.
  • Scientifically Accurate: Uses the Mifflin–St Jeor formula.
  • Privacy Focused: No personal data is stored or tracked.
  • Beginner-Friendly: Simple and easy-to-use interface.

Frequently Asked Questions (FAQs)

BMR represents the minimum number of calories your body needs each day to function while at rest.

Yes. BMR can change due to age, weight changes, muscle mass, hormonal changes, and lifestyle factors.

Yes, this BMR calculator is completely free and requires no registration.

The calculator uses the Mifflin–St Jeor equation, which is widely accepted by nutritionists and health professionals for adults.

No. All calculations are performed locally in your browser, and no personal information is stored or transmitted.

Disclaimer: This BMR calculator is for informational purposes only and does not replace professional medical or nutritional advice. Consult a healthcare professional for personalized guidance.