How to use this page
Use a known or estimated conception date when LMP dating does not fit your situation.
BumpCalc guide
Due Date Calculator by Conception Date
Use a known or estimated conception date to calculate your due date and pregnancy timeline.
Live toolUpdates instantly
Estimated due dateJanuary 28, 2027
Current weekWeek 3
TrimesterFirst trimester
Pregnancy startApril 23, 2026
Next milestoneYour first prenatal visit is usually the next big planning step.
Helpful next step
Save your estimated date, then compare it with your pregnancy week, trimester, and practical planning timeline.
Trust note
Dates are estimates. Your clinician may adjust them after ultrasound measurements, cycle history, or IVF transfer details.
Quick answers
Common questions
How is due date calculated from conception?
A common estimate adds 266 days to the conception date.
Is conception date always exact?
No. Conception date is often an estimate unless it is tied to fertility treatment timing.