Health & Fitness
Calorie Calculator
Use this calorie calculator for a starting estimate of daily energy needs. It is educational and not medical nutrition advice.
Maintenance calories
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- BMR
- —
- Gentle loss target
- —
- Gentle gain target
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Student quick launch
Grade planning, algebra checks, and formulas students reach for most.
Study path
Use this calculator with
Follow these when you want the formula behind the answer, a short lesson, or nearby tools in the same topic.
What the calorie calculator solves
Use this calorie calculator for a starting estimate of daily energy needs. It is educational and not medical nutrition advice.
Formula
How to use it
- Enter age, height, weight, and formula sex.
- Choose activity level.
- Use maintenance calories as a starting estimate.
How to read the answer
Maintenance calories estimate the intake that would keep weight stable over time.
Common mistakes and edge cases
- This is not a medical prescription.
- Activity multipliers are rough estimates.
- Teenagers, pregnancy, medical conditions, and athletes may need professional guidance.
Worked examples
Moderately active adult
Maintenance calories
2,740
Sedentary adult
Maintenance calories
1,614
Frequently asked questions
Is this medical advice?+
No. It is an educational estimate.
Why is my real maintenance different?+
Metabolism, activity tracking, food labels, and body composition all add uncertainty.
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Last updated: May 8, 2026