Pregnancy Weeks to Months Converter
Doctors count pregnancy in weeks, but most people think in months. This free converter turns your pregnancy weeks into months and your trimester instantly — so you always know where you stand in the 40-week journey.
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How to use
- Enter the number of weeks of your pregnancy.
- See the equivalent in months and days instantly.
- Check which trimester the result falls in.
- Use this together with the due-date calculator to track your progress.
Tips
- Pregnancy is counted from the first day of the last period, about two weeks before conception.
- Months are approximate because they have different lengths — weeks are the precise unit doctors use.
- Full term starts at 37 weeks; a typical pregnancy runs 40 weeks.
Note
Pregnancy is usually counted as 40 weeks (280 days). The month count is approximate because months have different lengths — month = total days / 30.44. Estimate only — not medical advice. Confirm your real progress with your doctor.