Pregnancy Due Date Calculator

Know The Date Of Your Baby’s Arrival,


Select first day of your last period *

Frequently Asked Questions about Pregnancy Due Date Calculators

1. How We Calculate Your Pregnancy Due Date ?

Due date is the estimated date of delivery. The actual delivery date may be the same or different due to many other factors related to pregnancy.Here's a pregnancy calculator that will help you calculate due date.
This calculator uses the LMP method. by LMP method you can calculate the due date by adding 40 weeks i.e 280 days to first day of your last menstrual period (LMP). Pregnancy is considered from first day of your last menstrual period (if pregnant), menstrual period is the first week of the pregnancy and lasts for approximately 40 weeks, i.e. 9 months 7 days. So, adding this length from the first days of your LMP gives your estimated date of delivery (EDD). This method is known as Dr. Nagele's rule.

2. What is pregnancy due date or expected date of delivery(EDD)?

The expected date of delivery (EDD) is the date on which you are likely to give birth to your baby. It is calculated on certain assumptions and gives an approximate date, helping you to prepare for the ‘D’ day.
Around 280 days or 40 weeks is what is considered for calculation. To be exact, it is nine and one-third months or 10 lunar months.

3. Why is due date calculated from last period?

LMP is the first day of your bleeding during the last menstrual period. You bleed as the uterus sheds the lining formed during the previous cycle. Ovulation occurs around two weeks from LMP, and that is when you become fertile. If fertilization occurs during this cycle, the uterine lining (endometrium) grows to accommodate the baby, thus making you miss your next period.
LMP is also considered for calculation because the date is easier to remember!

4. How accurate are these due dates?

LMP may not be the best date for calculation as the actual ovulation and fertilization begin only after two weeks. However, it is a popular way to know your due date as most of the women cannot precisely identify when they have ovulated or conceived. There is no single method which can predict the exact date.

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