BMR Calculator – Basal Metabolic Rate
Calculate Basal Metabolic Rate. Know how many calories your body burns at rest.
Tool
Enter your values and get results instantly.
How to Use
- 1Enter age, weight, height
- 2Select gender
- 3Click Calculate
- 4See daily BMR
Benefits
Frequently Asked Questions
What is BMR and why does it matter?
Basal Metabolic Rate is the number of calories your body needs at complete rest just to maintain basic functions like breathing and circulation.
How do you calculate BMR?
We use the Mifflin-St Jeor equation, which factors in your age, weight, height, and gender – it is the most accurate formula for most people.
How can I use my BMR for weight loss?
Once you know your BMR, you can add your activity level to get total daily calories, then create a deficit by eating fewer calories than you burn.
Does muscle mass affect BMR?
Yes – muscle burns more calories at rest than fat does, so people with higher muscle mass tend to have a higher BMR.
Is my personal data secure?
Absolutely. Everything runs in your browser – no data is uploaded, stored, or shared.