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Calorie Calculator

Estimate adult BMR and daily maintenance calories.

Works in your browser

Your result will appear here

Enter your values and choose Calculate. Nothing is uploaded.

Method and formula

Uses the Mifflin–St Jeor adult BMR equation and multiplies BMR by the selected activity factor to estimate TDEE.

Example and limitations

Maintenance calories describe an estimate for stable weight, not a prescribed intake.

Calorie needs vary. This calculator is educational, not medical advice, and is not intended for children, pregnancy, or treatment planning.

Privacy by design. This tool processes your work locally in this browser session.

Made for a focused workflow

Calorie Calculator works locally in this browser session, with no account required.

What to expect

  • Clear progress and recoverable errors
  • Explicit file handling and privacy information
  • No fabricated results while an engine is unavailable

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Frequently asked questions

How does Calorie Calculator work?

This tool runs in your browser. Follow the workspace prompts to complete the task.

Do I need an account?

No account is required for the basic browser tools currently available.

What happens to my files?

Files used by this tool stay in your browser for the current session.