Pregnancy Calculator
Use the Due Date Calculator to:
- Determine the due date
- Calculate the likely conception date
- Calculate the end of the first and second trimesters
- Find out for how many weeks have you been pregnant
- Estimate the fetal age
- Calculate how many weeks you will be pregnant on a given date
- Calculate on which date you will be pregnant the specified number
of weeks, and - Determine the likely conception date when you know the birthday or
due date.
Gestational age (or fetal age) is the time that a fetus
has been developing in the mother’s womb from the date of conception.
The Pregnancy Calculator gives you both, the fetal age and how far along
you are in your pregnancy.
In short, why do they differ:
- Fetal age (from the estimated conception date)Calculating the gestational age from the conception date is more
accurate. It is the preferred way of the medical textbooks. - How far along you are in your pregnancy (from the first day
of the last menstrual cycle)Calculating the gestational age from the from the first day of the last
menstrual cycle is more practical. It is the preferred
way of obstetricians.
How to use the Pregnancy Calculator
Enter the date of your last menstrual period and the number of days in
your menstrual cycle into the pregnancy calculator, and click on the Calculate
button. Other calculations are optional – use them when needed.
On average, there are 28 days in a menstrual cycle, but it can last from
as little as 22 to as many as 44 days. The Pregnancy Calculator takes
your menstrual cycle into account when calculating the due date and the
conception date.
Also, the 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.