When is my due date?

This calculator shows your potential delivery date. Enter your ovulation date or fill in the first day of your previous menstruation (before you got pregnant).

How to calculate the due date

On this page we caculate it the sae way as your doctor does it:

Add 280 days to your last menstrual period, or add 266 days to the day of your ovulation.

Please note that your due date is an average. Not everyone will give birth on this date!
In Week 38, 2 weeks before the estimated due date, 2 out of 10 women have already gave birth.
In Week 39, 1 week before the estimated due date, 4 out of 10 women have already gave birth.
In Week 40, at the estimated due date, 7 out of 10 women gave birth.
In Week 41, 1 week after the estimated due date, 9 out of 10 women gave birth.

Based on your ultrasounds, the estimated date will become more accurate.

More tools

My due date When is your due date? Enter the date of your last period or ovulation and you'll know. (roughly)

My alternative due date A -according to research- more accurate way to determine your due date.

My fertile days Shows your most fertile days and when you can try a home pregnancy test.

Fetus development This interactive movie shows what pregnancy does to your body!

Calculate your BMI Calculate your BMI. (But not during your pregnancy)

Growth charts Keep track of the growth of your child