BMR Calculator
Calculate your Basal Metabolic Rate (BMR). Find how many calories your body burns at rest.
Disclaimer: This calculator is for informational purposes only. Consult a healthcare professional for personalized nutritional advice.
What is BMR?
Basal Metabolic Rate (BMR) is the number of calories your body burns while at rest to maintain basic functions like breathing, circulation, and cell production. It represents the minimum calories your body needs daily.
BMR vs. TDEE
BMR: Calories burned at complete rest
TDEE (Total Daily Energy Expenditure): BMR × Activity Level
- Sedentary: BMR × 1.2
- Lightly Active: BMR × 1.375
- Moderately Active: BMR × 1.55
- Very Active: BMR × 1.725
Factors Affecting BMR
- Age: BMR decreases with age
- Gender: Men typically have higher BMR than women
- Muscle Mass: More muscle = higher BMR
- Body Composition: Lean body mass burns more calories
- Hormones: Thyroid hormones affect BMR
- Genetics: Natural variation in metabolism
Frequently Asked Questions
Why is the Harris-Benedict formula used?
It's one of the most widely used formulas for BMR estimation. It was developed in 1919 and updated in 1984, making it reliable for most people.
Frequently Asked Questions
❓ Is this tool free?
Yes! All our tools are completely free. No registration, no hidden charges, no ads. Just open and use.
🔒 Is my data safe?
Absolutely. All calculations happen in your browser. We don't store, send, or track any of your data. Everything is processed locally on your device.
📱 Can I use this on mobile?
Yes! All our tools are fully responsive and work perfectly on smartphones, tablets, and desktops.
🌐 Do I need internet?
No! Once the page loads, you can use the tool completely offline. All calculations happen in your browser without any server connection.