Pregnancy Calculator
Discover your estimated due date and track your baby's development week by week
Your Pregnancy Results
Estimated due date
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(40 weeks)
Weeks of gestation
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weeks
Current trimester
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of pregnancy
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Estimated conception date
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End of first trimester
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End of second trimester
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Estimated due date
Your baby's development this week
Calculate your due date to see personalized information about your baby's development.
Tips for this stage
First trimester
Perform calculations to get personalized advice based on your pregnancy stage.
Pregnancy FAQs
How is the due date calculated?
The date is calculated by adding 280 days (40 weeks) to the first day of your last period (Naegele's rule). This calculation assumes a 28-day menstrual cycle. If your cycle is longer or shorter, the date is adjusted accordingly.
How accurate is this calculator?
The date is an estimate. Only 5% of women give birth exactly on the calculated date. It's normal for delivery to occur between weeks 37 and 42 of gestation.
What are pregnancy trimesters?
Pregnancy is divided into 3 trimesters:
- First trimester: Weeks 1-13 (highest risk of miscarriage)
- Second trimester: Weeks 14-27 (period of least discomfort)
- Third trimester: Weeks 28-40 (preparation for delivery)
