How to Calculate EDD?

How do you calculate EDD (Estimated Date of Delivery)?

Estimated Date of Delivery Calculation

EDD is a term referred in calculating the due date of the pregnancy. EED is called as Estimated date of delivery. Naegele's rule is generally used in estimating the due date.
How To Calculate Edd
EDD Formula
It is calculated using the following format,
EDD = (+ 1 Year - 3 months + 7days) from LMP(Last menstrual Period)
The due date will be exactly 280 days (40 weeks) from the last menstrual period.
How To Calculate Edd Formula
Steps for Estimated Date of Delivery Calculation
Step 1: Lets consider an example,
Assume, Last date of menstrual period is 23 Oct 2015
Estimated Date Of Delivery Calculation Step 1
Step 2: From the formula,
LMP = 23 Oct 2015
+ 1 Year
= 23 Oct 2016
- 3 Months
= 23 July 2016
+ 6 Days
= 29 July 2016
Due date of Pregnancy is 29 July 2016
Estimated Date Of Delivery Calculation Step 2


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