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

Conception Date: If you know when conception occurred, the calculator will use that date for a more accurate estimate. Once the calculator processes your details, it will provide you with an estimated …

Aug 5, 2025 · Enter LMP, due date, or ultrasound to estimate your conception date and likely intercourse window. We also show a timeline of key pregnancy dates.

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.)

Dec 15, 2025 · Use this pregnancy calculator to find your due date based on the date of your last menstrual period, conception date, IVF three-day or five-day transfer date, or date of your last …

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.

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.

Free online conception date calculator. Discover when you were conceived based on your birth date. Accurate estimates for early, late, and on-time births.

This calculator provides an estimated pregnancy schedule based on the due date, last period date, ultrasound date, conception date, or IVF transfer date.