Advanced BMR Calculator

Looking to understand how many calories your body needs every day? Our free BMR & Calorie Calculator makes it simple. Just enter your age, gender, weight, height, and activity level, and instantly get your BMR (Basal Metabolic Rate) and TDEE (Total Daily Energy Expenditure). Whether your goal is weight loss, muscle gain, or maintenance, this tool gives you accurate daily calorie needs based on modern nutrition science.

BMR & Calorie Calculator

Find your Basal Metabolic Rate and daily calorie needs instantly.

15–120 years

What is BMR?

Basal Metabolic Rate (BMR) is the number of calories your body burns at rest to maintain essential functions like breathing, blood circulation, and cell repair. It represents your body’s minimum energy requirement to survive.

  • Higher BMR = you burn more calories even at rest.
  • Lower BMR = your body burns fewer calories naturally.

What is TDEE?

  • Total Daily Energy Expenditure (TDEE) is your BMR plus calories burned through activity and exercise. This gives you a realistic estimate of how many calories you need each day depending on your lifestyle.
  • Sedentary: little or no exercise.
  • Moderate Activity: exercise 3–5 times per week.
  • Active Lifestyle: daily workouts or physically demanding jobs.

Why Use a BMR Calculator?

Using a BMR calculator helps you:

  • Set realistic weight loss goals by knowing your calorie deficit.
  • Plan muscle gain or bulking by eating in a surplus.
  • Maintain your current weight by balancing calories in and out.
  • Track progress and make smarter diet decisions.

How to Use This BMR & Calorie Calculator

  • Select your gender and enter your age.
  • Input your weight and height (choose metric or imperial units).
  • Choose your activity level.
  • Click “Calculate My BMR” to see your results.
  • Get your BMR, TDEE, and calorie recommendations for maintaining, losing, or gaining weight.

Want to check BMI? use our Body Mass Index Calculator 

Frequently Asked Questions (FAQs)

What’s the difference between BMR and TDEE?

BMR is your body’s minimum energy use at rest, while TDEE includes all daily activity and exercise.

Is this BMR calculator accurate?

Yes. It uses the Mifflin-St Jeor equation, one of the most reliable formulas in nutrition science.

How can I lose weight using this calculator?

A BMI of 25 or above is considered overweight.

Can I use this calculator for bulking or muscle gain?

Yes. Add 300–500 calories per day to your TDEE to support lean muscle growth.

Should I recalculate my BMR after losing weight?

Absolutely. As your weight changes, so does your BMR. Recalculate regularly for best results.

Why Trust Our Advanced BMR Calculato?

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Important Note

This Advanced BMR Calculator is provided for educational and informational purposes only. It is not intended as a substitute for professional medical advice, diagnosis, or treatment. BMI is a general guideline and may not accurately reflect body composition, overall health, or risks for every individual. Factors such as age, gender, muscle mass, and medical conditions can affect results. Always consult with a qualified healthcare provider before making any decisions regarding your health, diet, or fitness based on this tool.