BMR Calculator
Wondering how many calories your body burns at rest? Our BMR calculator uses the Mifflin-St Jeor equation to estimate your Basal Metabolic Rate and TDEE at different activity levels.
What Is
BMR (Basal Metabolic Rate) is the number of calories your body needs to maintain basic physiological functions at rest, including breathing, circulation, cell production, and organ function. Our BMR calculator uses the Mifflin-St Jeor equation, which is considered the most accurate formula for estimating BMR. It factors in your age, gender, weight, and height to provide a personalized result. Once you know your BMR, you can estimate your Total Daily Energy Expenditure (TDEE) by multiplying it by an activity factor, which gives you the total calories you burn per day. Understanding your BMR is essential for designing effective nutrition plans, setting weight loss or gain goals, and optimizing athletic performance.
How to Use
- Select your gender
- Enter your age, weight, and height
- Click Calculate to see your BMR
- Review your TDEE at each activity level
- Use these numbers to plan your calorie intake
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Frequently Asked Questions
What is a normal BMR?
Average BMR is around 1,400-1,600 calories for women and 1,600-1,800 for men.
How accurate is the Mifflin-St Jeor equation?
It is considered the most accurate BMR formula for most people.
Should I eat at my BMR level?
No, use your TDEE with activity factor to determine daily calorie needs.
Can I increase my BMR?
Yes, building muscle through strength training and eating enough protein can help.