Enter your last menstrual period or your due date, and this pregnancy conception calculator estimates your likely conception date by working backward through standard pregnancy timelines.
Pregnancy Conception Calculator
Estimate your likely conception window, gestational age, and key pregnancy milestones.
Estimated Pregnancy Timeline & Milestones
| Milestone Event | Gestational Age | Estimated Date |
|---|
This estimate tends to be more reliable for regular cycles than irregular ones. Our article on estimating your conception date explains how doctors typically refine this timeline using early ultrasound measurements.
Still trying to conceive? Our pregnancy ovulation calculator can help identify your fertile window, and our pregnancy due date calculator projects your expected delivery date.