Due Date Calculator

Calculate based on
days (optional)

Naegele’s rule: 280 days after the first day of your last period. Reliable when your cycles are regular.

Example

This is a sample result, not your calculation. Enter your own values to replace it.

Choose how you are dating the pregnancy, fill in that method's dates, and calculate.

Estimated due date

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how far along

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trimester

Your pregnancy timeline
MilestoneDateGestational age
Last menstrual period — —
Estimated conception — —
Second trimester begins — —
Third trimester begins — —
Full term begins — —
Estimated due date — —

Check the dates

Fill in the dates the method you chose asks for.

This is general information, not medical advice. Always follow guidance from your healthcare provider.