Free Pregnancy Due Date Simulator
Pregnancy Due Date Simulator turns a date you know into an estimated due date, current pregnancy week, trimester stage, days remaining, and a simple timeline for early pregnancy, second trimester, third trimester, and common prenatal visit reminders.
Built for quick, private Pregnancy Due Date Simulator planning with clean routes and optional result links.
Start Pregnancy Due Date Simulator here: choose last menstrual period, conception, ovulation, or IVF transfer, then estimate the due date, pregnancy week, trimester, days left, and milestone dates.
Choose the dating method and enter the known date. Pregnancy Due Date Simulator recalculates the due date, gestational age, trimester, countdown, timeline, and prenatal reminders instantly.
Optional: enter the first ultrasound date and gestational age measured that day.
Normal edits keep the clean page URL. Copy a result link only when you want to share this estimate.
Pregnancy Due Date Simulator estimated due date
Current pregnancy week
Days to due date
Estimated pregnancy start
Dating basis
Ultrasound check
Dating quality
Dates are estimated from the calculated 40-week pregnancy timeline.
Common low-risk visit patterns vary by country, clinic, and pregnancy history.
This result is not a diagnosis, medical advice, or a replacement for prenatal care. Contact a pregnancy care provider to confirm dating, especially for irregular cycles, bleeding, pain, fertility treatment details, or high-risk pregnancy concerns.
Pregnancy Due Date Simulator is an educational estimator only. Your clinician may adjust dates using ultrasound, embryo records, cycle history, and individual care needs.
Pregnancy Due Date Simulator starts with the date you know, then converts it into a due date, pregnancy week, trimester stage, and planning timeline.
Use Pregnancy Due Date Simulator with the first day of the last menstrual period, conception date, ovulation date, or IVF transfer date with day 3, day 5, or day 6 embryo timing.
Pregnancy Due Date Simulator lays out early pregnancy, second trimester, anatomy scan window, third trimester, late-pregnancy checks, and estimated due date.
Use this Pregnancy Due Date Simulator guide to choose the right date input and read the estimate responsibly.
Pick last menstrual period if you know the first day of the last period, or choose conception, ovulation, or IVF transfer when that date is more precise.
Read the estimated due date, current gestational week, trimester, countdown, and progress across the 40-week timeline.
Treat trimester boundaries and visit reminders as planning prompts, then follow your care team's actual schedule.
Pregnancy Due Date Simulator is useful for planning, but prenatal care should confirm and personalize dates.
Explore more simulatorsPregnancy Due Date Simulator focuses on the practical questions people ask first: when is the due date, what week is it, what stage is it, and what dates matter next.
Estimate due date from LMP, conception, ovulation, or IVF transfer inputs.
See gestational age in weeks and days based on the calculated due date.
Identify first trimester, second trimester, third trimester, or past estimated due date.
List common trimester boundaries, anatomy scan window, late checks, and due date.
Use day 3, day 5, or day 6 embryo transfer timing for IVF estimates.
Copy a result link only on demand so normal page visits stay clean.
Pregnancy Due Date Simulator is most useful when you need a quick planning estimate before confirming details with a clinician.
Use the first day of the last menstrual period to estimate the classic 40-week due date.
LMPUse a tracked ovulation date or conception date when it is more reliable than cycle length.
OvulationUse transfer date and embryo day to estimate gestational age and due date after IVF.
IVFTurn the estimate into trimester boundaries and common prenatal visit reminders.
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Answers about Pregnancy Due Date Simulator estimates, LMP dating, conception dates, IVF transfer dates, trimesters, and prenatal reminders.
Pregnancy Due Date Simulator adds 280 days, or 40 weeks, to the first day of the last menstrual period. This is a common at-home estimate, but a care provider may revise dating after ultrasound or clinical review.
Pregnancy Due Date Simulator adds about 266 days, or 38 weeks, to a known conception or ovulation date. This assumes ovulation is close to fertilization, so it is still an estimate.
Pregnancy Due Date Simulator estimates IVF due date from the transfer date and embryo age. For example, a day 5 embryo transfer is treated as farther along than a day 3 transfer, so fewer days are added.
No. Pregnancy Due Date Simulator is a planning tool only. Confirm due date, pregnancy week, and prenatal schedule with a pregnancy care provider, especially with irregular cycles, IVF details, symptoms, or high-risk concerns.
Use Pregnancy Due Date Simulator to estimate a due date from the date you know and see the current pregnancy week, trimester, countdown, and milestone timeline.
Pregnancy Due Date Simulator keeps ordinary page visits clean and only creates a parameterized result link when you choose to copy it.
Pregnancy Due Date Simulator is free, private in your browser, and for reference only.