Pregnancy Calculator: Track Your Baby’s Growth
Pregnancy Calculator
Are you going to have a baby? Great news! Our Pregnancy Calculator helps you know when your baby will come. It makes it easy to track the key dates of your journey.
What Does Our Pregnancy Calculator Do?
The pregnancy calculator is a tool that tells you when your baby will be born. It does more than just find your due date. Our pregnancy calculator shows you:
- When you likely got pregnant
- How far along you are now
- When your baby will come
- Which part of pregnancy you’re in
- Key check-up dates
- How your baby is growing
Our calculator works for all stages. It helps from day one all the way to birth.
How to Use the Pregnancy Calculator
Our calculator is easy to use. You can pick the method that works for you:
First Method: Last Period Date
Most women use this method:
- Pick Last Period from the menu
- Type in when your last period began
- Set your cycle length if it’s not 28 days
- Click Calculate
This uses a rule that counts 280 days from when your period started.
Second Method: Conception Date
If you know when you got pregnant:
- Pick “Conception Date”
- Type in that date
- Click “Calculate”
This works well if you track when you can get pregnant each month.
Third Method: Ultrasound Date
If you’ve had an early scan:
- Pick “Ultrasound Date”
- Type in when you had the scan
- Add how far along the scan showed you were
- Click “Calculate”
Early scans give the most exact dates.
Fourth Method: IVF Date
If you had IVF:
- Pick “IVF Transfer Date”
- Type in when they put in the embryo
- Pick if it was a 3-day, 5-day, or 6-day embryo
- Click “Calculate”
This works for IVF by using the exact age of your embryo.
What Your Pregnancy Timeline Means
After you use the calculator, you’ll see all your key dates:
Conception Date
This is about when the egg and sperm met. For most women, this is about 14 days after their period starts.
Due Date
This is when your baby should come, at 40 weeks. Only 5% of babies come on this exact day! Most come within two weeks before or after.
Current Stage
This shows how many weeks and days you’ve been pregnant. Doctors count from the first day of your last period, not from when you got pregnant.
Pregnancy Parts
Pregnancy has three main parts:
- First Part (Weeks 1-13): Your baby’s main body parts form
- Second Part (Weeks 14-27): You feel your baby move and may learn if it’s a boy or girl
- Third Part (Weeks 28-40+): Your baby gains weight and gets ready for birth
Our calculator shows which part you’re in right now.
Key Check-Up Dates
Our pregnancy calculator shows when you’ll have key tests:
First Part Check-Ups
- Week 8: First scan to see the heart beat
- Week 12: Neck fold scan to check growth
Second Part Check-Ups
- Week 20: Full body scan to check all parts
- Week 26: Sugar test to check for health issues
Third Part Check-Ups
- Week 36: Strep B test
- Week 40: Due date
Knowing these helps you plan for your doctor visits.
How Your Baby Grows Week by Week
One of the best parts of being pregnant is learning how your baby grows. Our pregnancy calculator tells you what’s going on with your baby right now.
From the first weeks when your baby is tiny to the last weeks when they’re ready to be born, you’ll know just what’s going on.
Why Use Our Pregnancy Calculator?
Our calculator is better than other tools:
- Four ways to find your dates to fit your needs
- Full timeline with all key dates
- Baby growth facts for each week
- Progress tracking through each part
- Works on phones so you can check it anywhere
- Print your results to share with family or your doctor
Taking Care of You and Your Baby
While it’s fun to track dates, taking care of you is key. Here are some tips:
- Go to all your check-ups
- Take your pills with folic acid
- Drink lots of water and eat good food
- Move your body in safe ways
- Get plenty of rest
- Learn more about care when pregnant from top doctors
Each woman’s path is her own. Your doctor may give you a plan that fits just you.
Common Questions
How exact is the pregnancy calculator?
Our calculator gives good guesses based on standard math. How right it is depends on if your periods come at the same time each month. Early scans give the best dates.
Why do doctors count from my last period, not when I got pregnant?
Doctors use the first day of your last period since it’s easy to know that date. It’s hard to know just when you got pregnant, so they use this way to keep dates the same for all women.
What if I don’t know when my last period was?
If you don’t know that date, you can:
- Use our other ways if you know when you got pregnant or had a scan
- Ask your doctor, who can tell how far along you are by a scan
How is pregnancy time not the same as fetal time?
Pregnancy time counts from your last period (about 2 weeks before you got pregnant). Fetal time starts when you got pregnant. Pregnancy time is about 2 weeks more than fetal time.
Can my due date change?
Yes, your due date might change if an early scan shows a big gap. Your doctor may give you a new date.
What if my periods don’t come at the same time each month?
If your cycles change a lot, the last period method may not work well. An early scan will give you a better date.
Does the pregnancy calculator work for twins?
Yes, the due date math is the same. But twins often come early, at about 37 weeks.
What if my baby is bigger or smaller than it should be?
Small size gaps are fine. If your baby is much bigger or smaller, your doctor may change your due date or watch you more.
Final Thoughts
Our Pregnancy Calculator helps you track your baby’s growth from start to birth. It gives you key facts and dates. Each woman’s path is her own, so always talk to your doctor for care that fits just you.
Try our Pregnancy Calculator now to start tracking your baby’s growth!