Pregnancy Calculator

Use our pregnancy calculator/pregnancy calendar to help determine your due date and to follow your baby's development from conception to birth. Your pregnancy will be calculated from the first day of your last period. A typical pregnancy lasts 40 weeks. Only 5 percent of women will deliver on their due date (I was one of those 5 percent when I was pregnant with my first son).

The due date you get will only be an estimate, not an exact due date (unless your one of those 5 percent).

Just enter the first day of your last menstrual period below. Once you get the dates that correspond to your pregnancy week by week, you can then click on the week to see what's going on with your baby during that week.

First day LMP :

First Trimester
Week 1 :
Week 2 :
Week 3 :
Week 4 :
Week 5 :
Week 6 :
Week 7 :
Week 8 :
Week 9 :
Week 10 :
Week 11 :
Week 12 :
Week 13 :

Second Trimester
Week 14 :
Week 15 :
Week 16 :
Week 17 :
Week 18 :
Week 19 :
Week 20 :
Week 21 :
Week 22 :
Week 23 :
Week 24 :
Week 25 :
Week 26 :

Third Trimester
Week 27 :
Week 28 :
Week 29 :
Week 30 :
Week 31 :
Week 32 :
Week 33 :
Week 34 :
Week 35 :
Week 36 :
Week 37 :
Week 38 :
Week 39 :

Your estimated due date is:
Week 40 :