Free Pregnancy Due Date Calculator
Enter the first day of your last period.
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How to do it
- 1Choose your settings
Fill in the details or pick the options you need.
- 2See the result
The preview updates right away as you change things.
- 3Download or save it
Save the result to your device. Nothing is sent to or stored on a server.
about.title
Work out your estimated due date and how many weeks pregnant you are. Use the first day of your last period (adjusted for your cycle length) or the date of conception. You also see when the second and third trimesters start. Only about 5 percent of babies are born on the due date, so treat it as a guide, not medical advice.
Frequently asked questions
How is the due date worked out?
By adding 280 days (40 weeks) to the first day of your last period.
Is this medical advice?
No. Your midwife or doctor confirms your due date, usually with a scan.
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