What Is BMR (Basal Metabolic Rate)?
Basal Metabolic Rate (BMR) represents the minimum number of calories your body requires to maintain essential life functions such as breathing, blood circulation, brain activity, and temperature regulation while you are completely at rest.
Even if you were to lie in bed all day without any physical activity, your body would still burn calories to keep organs functioning. This calorie requirement is your BMR.
How Is BMR Calculated?
This calculator uses the Mifflin-St Jeor equation, which is considered the most accurate formula for estimating BMR in healthy adults.
- Men: BMR = 10 × weight (kg) + 6.25 × height (cm) − 5 × age + 5
- Women: BMR = 10 × weight (kg) + 6.25 × height (cm) − 5 × age − 161
What Are Daily Calorie Needs?
Daily calorie needs are calculated by multiplying your BMR with an activity factor. This reflects how active your lifestyle is, ranging from sedentary to very active.
Knowing your daily calorie requirement helps you maintain, lose, or gain weight effectively.
Why Knowing Your BMR Is Important
- Helps plan healthy weight loss or weight gain
- Prevents under-eating or excessive calorie intake
- Improves nutrition and fitness strategies
- Essential for calorie deficit calculations
- Useful for athletes and fitness enthusiasts
Who Should Use This Calculator?
This BMR & calorie calculator is ideal for anyone looking to understand their metabolism, manage body weight, plan fitness goals, or improve overall health.
It is completely free, fast, mobile-friendly, and requires no sign-up.