Pregnancy Calendars Home Page

Home : Pregnancy Tools : Pregnancy Calculator


Advertisement

Pregnancy Calculator

Our pregnancy calculator will calculate your estimated due date, the fetal age, which is the age of your developing baby as well as the conception date. This is also a great tool to use in conjunction with our detailed week by week pregnancy calendar.

Remember, the more you know about your own monthly cycle the more accurate the calculator will be. If you are trying to fall pregnant, read our section on getting pregnant.

PREGNANCY CALCULATOR - Calculate Your Due Date
First Day Last Menstrual Period
(mm/dd/yyyy)

Average Length of Cycle (Default 28 )

Average Luteal Phase Length (Default 14 )
(Ovulation Period)


* (22 to 45)

*(9 to 16)

* leave blank if you are unsure
 
Your Estimated Conception Date:

Your Estimated Due Date:

Estimated Pregnancy Week:




Choose The Week Of Your Pregnancy

Week 1 & 2 · Week 3 · Week 4 · Week 5 · Week 6 · Week 7 · Week 8 · Week 9 · Week 10 · Week 11 · Week 12 · Week 13 · Week 14 · Week 15 · Week 16 · Week 17 · Week 18 · Week 19 · Week 20 · Week 21 · Week 22 · Week 23 · Week 24 · Week 25 · Week 26 · Week 27 · Week 28 · Week 29 · Week 30 · Week 31 · Week 32 · Week 33 · Week 34 · Week 35 · Week 36 · Week 37 · Week 38 · Week 39 · Week 40

How Do You Calculate Your Due Date?

Have you ever wanted to know how your doctor or health care provider calculates your estimated due date and age of your baby? Well, it is actually a really simple process:

You add 280 days to the first day of your last menstrual period, or LMP

It is really as simple as that. The 280-day cycle works on the typical 266-day gestation period for humans. We get 280 days because we add 14 days, which is the average time span for when you would have ovulated.

Obviously this is just an average, but with our calculator the 14 days can be changed for what your actual Luteal Phase, or to what your actual ovulation period actually is, and this makes it extremely useful, as the more you know about your monthly cycle, the more accurate your calculations will be.

The more you know about your monthly cycle the more accurate our calculator will be. So as mentioned in the conception basics, it is a good idea to track your monthly cycles for a few months before hand.

Of course not all pregnancies are planned, but if your monthly cycle is more regular, then you should have no problems using our calculator.

Don't forget that you can use these calculations in conjunction with our pregnancy calendar.

Recommended Videos

What's Hot!

Pregnancy Calendar - Week 11
Group B Strep Swab
Non Stress Test
Bloating During Pregnancy
Benefits of Exercise During Pregnancy
New vs Old Exercise
Anemia & Pregnancy
Conceive A Boy
Induce Labor Naturally
Ultrasound Week 28
About Your Pregnancy

Your Pregnancy WEEK BY WEEK

Sign up now, and recieve Weekly updates on how your pregnancy & your baby are developing. Including pictures, nutritional advice, info on symptoms and complications and so much more!

ENTER YOUR DUE DATE:



Note sure about your due date?
What's new in our Community

Lastest PostsMost Read PostsLastest Polls

Oh My!
Well, I was waiting and waiting for my period to come,....
- familyofthree   1 Aug 2010 2:06 AM

After a caesarian ???
How long did your scar and surrounding area hurt for a....
- tiffmitchnolivia   31 Jul 2010 11:02 PM

long :/
Moving to NH has been great. I love the quiet, tranqui....
- blueiris   31 Jul 2010 10:54 PM

Breast pumps
Ok ladies... I am wondering what breast pump you use a....
- MommYtoBella   31 Jul 2010 9:36 PM

It's a Boy!!!!!!!!! Need help with names! :D
The baby is a boy!![:D] He looks great! No bone pro....
- monkeymomtobe   31 Jul 2010 9:29 PM

Yup im all alone
So yesterday my boyfriend broke up with me... im all a....
- carey   31 Jul 2010 8:54 PM

Special Feature

Stages Of Labor
There are three distinct stages of labor, and your experience with each will be very different. Find out more of what you can expect....

Glucose Tolerance Test
It is not uncommon for a health care provider to recommend that you have a glucose screening test. This test is carried out to determine if.....

Childcare Choices
Going back to work and spending time away from your baby can be stressful enough and trying to find the right creche or childcare facility....

Asthma While Pregnant
If you are one of the many women that suffer from asthma, you may be concerned about how this ailment of yours will affect your unborn child.

COMMUNITY

Community Forums
MyPregnancy Blogs
Active Topics

MEDIA GALLARIES

Pregnancy Pictures
Baby Nusery
Pregnancy Videos
Childbirth Videos

POPULAR SECTIONS

Pregnancy Symptoms
Pregnancy Stages
Childbirth and Labor
Getting Pregnant

ABOUT US

About Us
Privacy Policy
Newsletter UnSubscribe
Advertise