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Pregnancy Calculator

Estimate gestational age, due date, and trimester.

Works in your browser

Your result will appear here

Enter your values and choose Calculate. Nothing is uploaded.

Method and formula

Derives LMP or due date using a 280-day pregnancy estimate, then counts completed weeks and days.

Limitations

Inputs stay in this browser session and are not included in analytics.

Educational estimate only—not a medical diagnosis or clinical recommendation. Pregnancy dates require clinical confirmation.

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

Made for a focused workflow

Pregnancy 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 Pregnancy 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.