BMR & Daily Calorie Needs

Estimate your Basal Metabolic Rate and daily calorie requirement.

Your Details

BMR (Calories/day) 0
Daily Calories Needed 0
Goal Guidance —

Interpretation

  • Maintain weight: Eat the calculated calories
  • Weight loss: Reduce 300–500 kcal/day
  • Weight gain: Add 300–500 kcal/day

What is BMR?

Basal Metabolic Rate (BMR) represents the number of calories your body needs at rest to maintain basic functions such as breathing and circulation.

How Daily Calorie Needs Are Estimated

Daily calorie requirements are calculated by adjusting your BMR based on your activity level, providing a realistic estimate of energy needs.

Why Use a BMR Calculator?

  • Understand your baseline calorie needs
  • Plan weight loss or weight gain goals
  • Create informed diet and fitness plans

Frequently Asked Questions

Is this BMR calculation accurate?

Yes. It uses widely accepted BMR formulas such as Mifflin-St Jeor.

Does BMR change with age?

Yes. BMR generally decreases as muscle mass reduces with age.

Is activity level important for calorie calculation?

Yes. Activity multipliers help estimate realistic daily calorie needs.

Is my data stored?

No. All calculations run locally in your browser.