Use the Pregnancy 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
- Get an idea for how long you'll be active
- 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. Our Pregnancy Calculator gives you both, the fetal age and how far along you are in your pregnancy.
For full explanation, see How Pregnancy Calculator computes the fetal age.
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. It's a very useful tool as perhaps you were busy playing bingo, or with work commitments, or just have a busy life and you aren't sure of these things.
Unsolicited Comment from USA Baby Hawaii
I am the Internet technician as well as the web designer for USA Baby Hawaii. I Bought your Pregnancy calculator today and I must say, this is the best pregnancy calculator out there!
I am completely satisfied and I know all of our customers will enjoy using the calculator! Thank you so much for all of your hard work. I will be looking forward to using some of your other programs on our site in the near future!"
A super satisfied customer!
USA Baby Hawaii (IT)
Want to use Pregnancy Calculator on your site?
The non-exclusive license to use this calculator on your website is just $29.95.
Read all the details:
Pregnancy Calculator FAQ and Licensing
Adding it is an effortless copy-and-paste operation, you can easily modify the colors and layout, and you can have it fully operational on your site 5 minutes from now.
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