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

Nov 21, 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.

Calculate a conception date based on your due date, a DOB or your last menstrual period.

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.)

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.

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

Our free pregnancy calculator can estimate your pregnancy due date based on the date of last menstrual period , conception date, IVF Transfer & ultrasound scan.

Sep 26, 2024 · Use our Conception Date Calculator to find out the most likely date you conceived your little bundle. You may even be able to use your conception date to see how far along you …

Estimate when you conceived with our accurate conception date calculator. Calculate your conception date range from LMP, due date, or ultrasound data with medical precision. Our …

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