Question 1

What is a Weeks Pregnant Calculator?

Accepted Answer

Pregnancy is counted in weeks from the first day of the Last Menstrual Period (LMP). Full term is 40 weeks. Babies born 37–42 weeks are considered full term.

Question 2

How does the Weeks Pregnant Calculator work?

Accepted Answer

Weeks = (Today − LMP) / 7 Then: Due date = LMP + 280 days (Naegele's rule) Then: First trimester: 1–13 weeks; Second: 14–27; Third: 28–40 Then: Preterm: born before 37 weeks.

Question 3

Can you give an example of how to use the Weeks Pregnant Calculator?

Accepted Answer

Example: Input LMP 1 January, checking 1 April gives a result of 13 weeks pregnant; second trimester begins next week.

Question 4

Is the Weeks Pregnant Calculator free to use?

Accepted Answer

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

Question 5

How accurate is the Weeks Pregnant Calculator?

Accepted Answer

Our Weeks Pregnant Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

Weeks Pregnant Calculator

Weeks Pregnant Calculator

What is Weeks Pregnant Calculator?

How to Use Weeks Pregnant Calculator

Example Weeks Pregnant Calculator

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