Calculators

How to use the Buy4BabyDirect Pregnancy Calculator

Enter the date of your last period and the number of days in your menstrual cycle into the Buy4BabyDirect Pregnancy Calculator, and click 'calculate'.

On average, there are 28 days in a menstrual cycle, but it can range from 22 to 44 days. The Buy4BabyDirect Pregnancy Calculator takes your menstrual cycle into account when calculating the due date and the conception date.

The Buy4BabyDirect Pregnancy Calculator needs the number of days in your menstrual cycle when calculating the likely conception date from the given birthday or the due date.

Pregnancy Calculator
When was the first day of your last menstrual period?

Number of days in your menstrual cycle

Likely conception date:
End of first trimester (12 weeks):
End of second trimester (27 weeks):
Your due date is (40 weeks):
(1) Fetal age (from the conception date):
(2) How far along you are in your pregnancy:
How many weeks will you be pregnant on a given date?


Number of weeks you will be pregnant for:
On which date will you be pregnant for the given number of weeks?
The number of weeks:

Calculated date:
Given the birthday or due date, calculate likely conception date


Calculated conception date: