WeVividWeVividEstimate your due date and current week of pregnancy from your last period or conception date.
This is an estimate based on a standard 280-day pregnancy from the last period, or 266 days from conception. Your doctor’s dating from a scan is more accurate.
It adds 280 days (40 weeks) to the first day of your last menstrual period — the standard method most doctors use first.
It's a standard estimate. An ultrasound dating scan from your doctor is more accurate for your specific pregnancy.
Switch to 'Conception date' — it adds 266 days (38 weeks) instead, since conception typically happens about two weeks after the last period.
Yes — use the 'Add to calendar' button to add it to Google Calendar, or download an .ics file for Apple Calendar or Outlook.