Use this pregnancy calculator to estimate a due date, pregnancy week, trimester, days left, and key milestone dates from LMP, conception, IVF transfer, or a known due date.
Choose a dating method to estimate due date, pregnancy week, trimester, days left, and key milestones.
Privacy note: calculator inputs stay in your browser and are not sent to an Age Finder server.
A pregnancy calculator estimates important pregnancy dates from the information you already know, such as the first day of the last menstrual period, conception date, IVF transfer date, or an existing due date. The result shows the estimated due date, current pregnancy week, trimester, days remaining, estimated conception, and milestone dates such as 12 weeks, 20 weeks, third trimester, and full term. It is useful for personal planning and preparing questions for a healthcare visit, but it cannot confirm pregnancy dating or replace medical advice.
If the first day of the last period is January 1, 2026 and the cycle length is 28 days, the estimated due date is October 8, 2026.
Due dates are estimates. A clinician may adjust dating after ultrasound, cycle history, IVF details, or medical review.
Choose the date method you know, enter the matching date, and calculate. For LMP, the estimate is based on about 40 weeks from the first day of the last period.
Enter your LMP, conception date, IVF transfer date, or known due date, then set the calculate-on date. The result shows pregnancy week and day.
An LMP pregnancy calculator starts from the first day of the last menstrual period and estimates due date, weeks pregnant, trimester, and milestones.
Yes. Select Conception date and enter the date. The calculator estimates the due date from that point.
Yes. Choose IVF 3-day transfer or IVF 5-day transfer and enter the transfer date. The result estimates the due date and pregnancy week.
For LMP estimates, a cycle longer or shorter than 28 days can shift the estimated due date. Use the average cycle length field only if you know it.
The result shows first, second, or third trimester based on estimated pregnancy week. It also marks dates for trimester changes.
Clinical dating may use ultrasound measurements, cycle history, IVF details, ovulation timing, and medical judgment, so it can differ from an online estimate.
No. It only estimates dates. Pregnancy confirmation, symptoms, scans, and medical decisions should be handled with a qualified healthcare professional.
Yes. After calculating, you can save the result as PDF, Word, or TXT, or share the result text when your browser supports sharing.
