About BMR Calculator
BMR Calculator helps determine your Basal Metabolic Rate, which is the number of calories your body burns at rest to maintain basic life functions. Knowing your BMR is a critical first step when designing a nutrition plan for weight loss, maintenance, or muscle gain. By factoring in your age, gender, height, weight, and activity level, this tool estimates your Total Daily Energy Expenditure (TDEE). This metric provides a baseline for setting daily caloric targets. Like all UtilityLab health tools, calculations are entirely private and operate exclusively within your browser.
Key Benefits
- Determine daily resting calorie burn.
- Estimate Total Daily Energy Expenditure (TDEE).
- Support weight loss and fitness planning.
- 100% private and secure browser calculation.
How to use
- Enter Biometrics
Input your age, gender, height, and weight.
- Select Activity Level
Choose how active you are during the week.
- Calculate BMR
Instantly view your resting metabolic rate.
- View TDEE
See your total estimated daily caloric needs.
Frequently Asked Questions
What is BMR?
Basal Metabolic Rate is the total number of calories your body needs to perform basic, life-sustaining functions at rest.
What is the difference between BMR and TDEE?
BMR is resting calories. TDEE multiplies BMR by your activity level to estimate total daily burn.
How accurate is this calculation?
It uses the Mifflin-St Jeor equation, widely considered one of the most reliable formulas for estimating BMR.
Do you store my weight or age?
No. All inputs are processed locally on your device.
How do I use BMR for weight loss?
To lose weight, you generally need to consume fewer calories than your TDEE.