Pregnancy Calculator

This is a pregnancy calculator can be used to estimate the pregnancy schedule based on the biological cycles.

Also check the ovulation calculator and the due date calculator.

first day of your last period:
average length of cycles:

The results of this pregnancy calculator are only estimation based on average. The actual length of pregnancy depends on various factors. For example, the first pregnancy tends to last longer than subsequent pregnancies. Fewer than 10% of births occur on the due date; 50% of births are within a week of the due date, and almost 90% within two weeks.