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

Jul 7, 2025 · Free pregnancy conception calculator estimates conception date based on due date, last period or ultrasound date. Enter birthday for reverse due date calculation.

Calculate the likely conception date from your due date, last menstrual period, ultrasound date, or IVF transfer date.

Our easy-to-use pregnancy calculator is the number one most popular way to calculate your due date based on the date of your last menstrual period or conception date, IVF transfer date, or the date of …

Aug 5, 2025 · Enter LMP, due date, or ultrasound to find your conception date and likely intercourse window - plus a clean 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.)

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

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 sophisticated clinical …

Knowing your conception date and estimated due date is crucial for every expectant parent. Our Conception Date / Due Date Calculator provides an effortless way to calculate both based on the first …