Estimate your pregnancy due date, current pregnancy week, conception date, and trimester timeline. This free due date calculator supports last menstrual period, conception date, IVF transfer date, and ultrasound dating methods in a clean calculator layout.
Last period method:
Uses the first day of your last menstrual period and adds 280 days.
Conception method:
Uses a known or estimated conception date and adds 266 days.
IVF method:
Uses transfer date and embryo age to estimate gestational timing.
Ultrasound method:
Uses the gestational age on the scan date to estimate the due date.
A due date calculator can help make the pregnancy timeline easier to understand by showing how far along things are now, what trimester applies, and the key dates ahead.
It can be especially useful for general planning and milestone tracking during pregnancy.
Your result shows the estimated due date, current gestational age, estimated conception date, and trimester or milestone dates depending on the method selected.
This gives you both a headline due date and a practical timeline view in one place.
It provides an estimate based on the method used. Actual delivery can happen before or after the estimated date.
The standard timeline usually assumes about 280 days from the last menstrual period or about 266 days from conception.
Yes. IVF dating uses the transfer date and embryo age to estimate gestational timing more directly.
Cycle timing, ovulation timing, measurement differences, and different known dates can all shift the estimate slightly.