Free tool

Due Date Calculator

Get ready for baby's arrival — estimate your due date, see exactly how far along you are today, and keep track of the pregnancy milestones ahead.

Calculate from

First day of your last period

The first day of bleeding, not the last.

Pregnancy age at that scan

weeks

days

As written on your scan report, e.g. “12w 3d”.

Average cycle length: 28 days

212835

We adjust the estimate for longer or shorter cycles.

Estimated due date

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40 weeks from your dates

You are now

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Days to go

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Full term begins at 37 weeks

Week 01st trimester2nd trimester3rd trimesterWeek 40

Only about 4% of babies arrive exactly on their due date — most are born within two weeks either side. Your dating scan gives the most accurate estimate. Book your antenatal visit with Dr Chaminda Mathota.

Just found out you're pregnant? Read our guide on the dating scan — baby's first snapshot.

Book a consultation Try the fertile period calculator