Dream2Birth guide
Due Date Calculator
How to estimate a pregnancy due date and use it as a calm starting point for planning.
Last updated: 23 August 2026
Try a quick estimate
A useful first planning anchor.
Enter the first day of the last period to estimate a due date. Use care team guidance or scan dating if your provider gives a different date.
Dream2Birth uses dates as planning support, not as medical advice or a guarantee of when birth will happen.
How due dates are usually estimated
A common pregnancy due date estimate is 40 weeks from the first day of the last menstrual period. Some families use an early scan date or a date given by their care team instead.
Dream2Birth treats the due date as a planning anchor for weekly guidance, appointments, notes and preparation. It is not a guarantee of when birth will happen.
What to do with the date
- Use it to set up the current pregnancy week.
- Bring the date into appointment planning and scan records.
- Adjust the date if a midwife, GP or obstetrician gives updated guidance.
- Avoid making medical decisions from an app estimate alone.
Care-team note
If dates are uncertain, cycles are irregular, fertility treatment was involved or scan dating differs from period dating, ask a qualified care provider which date to use.
Dream2Birth
Dream2Birth is private planning support for trying, pregnancy and the first baby days. It is not a medical device and does not provide medical advice.