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Use this calorie needs calculator for a clear health & fitness estimate. Results update instantly in your browser.
What this calculator does
Estimate maintenance calories from BMR and usual activity.
How to use this calculator
- Enter age, sex, height, weight, and activity level.
- Review the calculation assumptions before using the result.
- Use the result as a starting point and monitor real changes.
How to calculate
Enter your personal details and typical activity level. Your BMR is multiplied by the activity factor.
Worked example
A moderate-activity adult with a BMR of 1,649 needs roughly 2,556 calories per day to maintain weight.
Understanding your result
Use the result as a starting point and monitor real changes.
- Medical conditions and activity variation affect needs.
- Double-check values and units before calculating.
Calorie targets are estimates; speak with a clinician for personal nutrition advice.
Frequently asked questions
What does this calorie needs calculator do?
Estimate maintenance calories from BMR and usual activity.
How do I use this calorie needs calculator?
Enter age, sex, height, weight, and activity level.
What does the result mean?
Use the result as a starting point and monitor real changes.
What should I check before relying on it?
Medical conditions and activity variation affect needs.