A pregnancy due date calculator helps you determine when you are likely to give birth. 

The pregnancy due date calculator takes into account the last period/date of conception and works 38-39 weeks forward from there. 

A pregnancy due date calculator is important to know not just when you will give birth, but also to keep track of your milestones as a pregnant woman and the growth and development of your foetus, week by week. You should keep track with a pregnancy week calculator by due date - because if you experience uneasiness earlier, you have to see a doctor. 

As per any standard pregnancy due date calculator, a woman should be pregnant for 38-39 weeks and experience labour pains naturally and then give birth.

You should visit a doctor if you have missed your period, are planning a baby or have tested positive for pregnancy.