Pregnancy Calculator
Calculate your due date, conception date, and pregnancy timeline based on your last menstrual period or ultrasound date. Track your pregnancy progress week by week.
Last Period
Ultrasound
Conception Date
Your Pregnancy Timeline
| Due Date | - |
|---|---|
| Conception Date | - |
| First Trimester Ends | - |
| Second Trimester Ends | - |
| Current Pregnancy Week | - |
| Days Until Due Date | - |
Key Milestones
Week 4
-
Positive pregnancy test possible
Week 8
-
First prenatal visit
Week 12
-
First trimester screening
Week 20
-
Anatomy ultrasound
Your Pregnancy Timeline
| Due Date | - |
|---|---|
| Conception Date | - |
| First Trimester Ends | - |
| Second Trimester Ends | - |
| Current Pregnancy Week | - |
Your Pregnancy Timeline
| Due Date | - |
|---|---|
| First Trimester Ends | - |
| Second Trimester Ends | - |
| Current Pregnancy Week | - |
About Pregnancy Calculator
The Pregnancy Calculator helps you estimate your due date based on the date of your last menstrual period, ultrasound measurements, or conception date. It also provides a timeline of key pregnancy milestones and calculates how far along you are in your pregnancy.
How to Calculate Your Due Date
There are several methods to estimate your due date:
- Last Menstrual Period (LMP): Pregnancy normally lasts about 40 weeks from the first day of your last period. This method adds 280 days (40 weeks) to your LMP.
- Ultrasound Dating: Early ultrasound measurements (especially in the first trimester) can provide the most accurate due date estimation by measuring the baby's size.
- Conception Date: If you know your conception date, you can estimate your due date by adding 266 days (38 weeks) to that date.
Understanding Pregnancy Weeks
Pregnancy is typically divided into three trimesters:
- First Trimester: Week 1 to the end of Week 12
- Second Trimester: Week 13 to the end of Week 26
- Third Trimester: Week 27 to the end of pregnancy
Remember that only about 5% of women deliver on their exact due date. Most babies are born within two weeks before or after the estimated due date.