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Free Online Tool
BMR Calculator
Calculate Basal Metabolic Rate.
Instant resultsNo signup100% free
Works entirely in your browser
What is BMR?
Your Basal Metabolic Rate (BMR) is the number of calories your body needs at complete rest to keep your heart beating, lungs breathing and cells working. Knowing it is the first step to planning any diet or weight goal.
- Gender-aware BMR formula
- Maintenance calories for 5 activity levels
- Supports metric & imperial units
How to Use
- 1Pick your gender and enter your age.
- 2Enter your height and weight.
- 3Press Calculate to see your BMR and daily maintenance calories for each activity level.
Stay healthy, stay happy!
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Frequently Asked Questions
What is BMR?
BMR (Basal Metabolic Rate) is the energy your body burns at rest to keep essential functions like breathing and heartbeat going.
How do I use my BMR?
Multiply your BMR by an activity factor (1.2 to 1.9) to estimate your daily maintenance calories, then adjust for weight goals.
Is this medical advice?
No. BMR is an estimate. Consult a healthcare professional for a full dietary and health assessment.