Free BMR Calculator

Calculate daily calorie needs at rest using the Mifflin-St Jeor equation. Free.

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How to Use This Tool

Enter weight, height, and age. Uses the Mifflin-St Jeor equation for males. BMR shows calories burned at complete rest.

Why Use This?

Knowing your BMR helps plan calorie intake for weight loss, maintenance, or gain. It is the foundation of all diet calculations.

Frequently Asked Questions

What is BMR? Basal Metabolic Rate — the calories your body burns just to keep you alive (breathing, circulation, cell production).