Calculate weeks of pregnancy

For further information: duration of pregnancy

1. What do you want to calculate? An estimate of the date of conception and the theoretical date of birth
The first day of my last period
Conception date based on actual or presumed date of birth 2. Enter the first day of your last period:
2. Enter the estimated date of birth:
2. Enter actual or presumed date of birth:
→ click here to enter a date Results: First Quarter Second Quarter Third Quarter