Pregnancy Week Calculator
Find out your current pregnancy week, month and trimester.
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Pregnancy Progress0%
How to Use
Enter the first day of your last period (LMP) or your known due date. Click Calculate to see your current pregnancy week, month, trimester and a description of baby's development.
How Pregnancy Weeks Are Counted
Pregnancy is dated from the first day of your last menstrual period (LMP), not from conception. A typical full-term pregnancy lasts 40 weeks (280 days). The pregnancy week is calculated by dividing the number of days since your LMP by 7.
Frequently Asked Questions
How many weeks is a full pregnancy?
A full-term pregnancy is approximately 40 weeks (280 days) counted from the first day of the last menstrual period.
How do I convert pregnancy weeks to months?
Roughly, each pregnancy month is about 4.3 weeks. The calculator shows both weeks and months for easy reference.
Medical Disclaimer: This calculator provides estimates. Pregnancy progression can vary between individuals. Always consult your healthcare provider for accurate pregnancy monitoring.