This free pregnancy conception calculator estimates a range of conception dates based on a provided due date, last period date, or ultrasound date.

Aug 5, 2025 · Enter LMP, due date, or ultrasound to find your conception date and likely window - plus a clean timeline of key pregnancy dates.

Our conception calculator, also known as a reverse due date calculator, is the answer to the question "When did I conceive?" as it estimates when your pregnancy was conceived.

This conception calculator will help you estimate the conception date of your child.

This conception calculator estimates conception date in case of an ongoing pregnancy or based on a date of birth.

Jun 6, 2025 · Our Conception Date Calculator uses your due date to estimate when you got pregnant. (If you don't know your due date yet, just head over to our Due Date Calculator.)

Enter the first day of your last menstrual period (LMP) and your average cycle length to estimate your conception date and important fertility dates. The Conception Calculator is a …

Dec 15, 2025 · The Conceived Date Calculator estimates the approximate date of conception based on your due date and typical pregnancy length. It also calculates when your first and …

May 14, 2025 · Estimate ovulation, fertile days, next period, and due date with this easy-to-use conception calculator. Ideal for cycle tracking and pregnancy planning.

Calculate your due date, conception date, and track your pregnancy week by week. Get accurate pregnancy timeline with key milestones and important dates for your pregnancy journey.