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👶 Due Date Calculator

Estimated due date from the first day of your last period.

First day of last period

About this tool

Calculate your baby due date from the first day of your last period.

Good to know

Your dating scan may adjust your due date.
Only about 5% of babies arrive exactly on the due date.

For guidance only. Results are estimates. Please speak to your GP or midwife for advice about your health.

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