Pregnancy Due Date Calculator

Estimate due date from the first day of the last period.

All processing happens locally in your browser. Your input is never sent to a server or saved by Wraplet.

First day of last period

Estimated due date

Oct 8, 2026

Health calculators provide general informational estimates only and are not medical advice, diagnosis, or treatment.

How to use

Enter the values for the pregnancy due date calculator.

Review the result instantly in your browser.

Copy the result or open a related tool if you need another calculation.

Estimate due date from the first day of the last period.

LMP 2026-01-01

Estimated due date 2026-10-08

Yes. It is free to use with no account required.

No. The calculation runs in your browser and is not saved by Wraplet.

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