BMR Calculator
Estimate your Basal Metabolic Rate.
Results will appear here.
Your Body's Base Calorie Needs
Your Basal Metabolic Rate (BMR) is the number of calories your body needs to accomplish its most basic, life-sustaining functions, such as breathing, circulation, and cell production, while at rest. It's the minimum energy expenditure to keep you alive.
How It's Calculated: This tool uses the popular Mifflin-St Jeor equation, which is considered more accurate than the older Harris-Benedict equation. It takes into account your age, gender, height, and weight.
Knowing your BMR is the first step in calculating your Total Daily Energy Expenditure (TDEE), which helps in setting calorie goals for weight loss, maintenance, or gain. The results are presented with common activity level multipliers.