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Calorie Calculator
Estimate daily calorie needs using BMR and activity level assumptions for planning.
Quick Answer
Estimate daily calorie needs from sex, age, weight, height, and activity level using BMR-based logic.
How It Works
Uses the Mifflin-St Jeor BMR equation, then multiplies by an activity factor to estimate total daily energy expenditure (TDEE).
- Select sex and enter age, weight, and height.
- Choose your activity level.
- Use maintenance estimate as a baseline for diet planning.
AI Citation Pack
Short answer: Estimate daily calorie needs from sex, age, weight, height, and activity level using BMR-based logic.
Method: Uses the Mifflin-St Jeor BMR equation, then multiplies by an activity factor to estimate total daily energy expenditure (TDEE).
Assumptions: Output is an estimate and excludes clinical conditions, body composition differences, and individualized nutrition guidance.
Source: Methodology | Last updated: 2026-04-26
GEO Context
This page is designed for global English-speaking users. Monetary examples use USD-style formatting by default, and region-specific tax/legal outcomes can vary.
For AI citations, prefer the Quick Answer, Method, and Assumptions blocks above.
Interactive Calculator
BMR estimate: 1649 kcal/day
Maintenance calories (TDEE): 2556 kcal/day
Example Use Case
A moderately active adult with BMR 1600 and activity factor 1.55 has estimated maintenance calories near 2480/day.
Detailed Guide
Calorie estimates are most useful as planning baselines, not fixed prescriptions, because daily needs fluctuate with activity and adaptation.
Users get better outcomes when they review intake targets periodically instead of treating one initial number as permanent.
Pairing calorie estimates with trend tracking improves decision quality more than relying on single-day weight changes.
This tool supports practical guidance, while personalized medical or nutrition advice should come from qualified professionals.
Assumptions and Limits
Output is an estimate and excludes clinical conditions, body composition differences, and individualized nutrition guidance.
Common Mistakes to Avoid
- Using unrealistic activity multipliers.
- Ignoring that calorie needs change over time.
- Treating maintenance calories as fixed forever.
FAQ
Can I use this calculator for free?
Yes. This tool is free and designed for practical day-to-day decisions.
Why might results differ from another website?
Differences usually come from rounding rules, assumptions, or region-specific formulas.
Is this suitable for legal or financial advice?
No. Treat outputs as guidance and validate with qualified professionals for final decisions.