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.

Dec 15, 2025 · Pregnancy Due Date Calculator When is your baby due? Use this pregnancy calculator to find your due date based on the date of your last menstrual period, conception …

Jun 6, 2025 · Assuming you have a 28-day cycle and ovulated on day 14, your conception date is roughly 38 weeks before your due date. Count 266 days from your conception date, and you'll …

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

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

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.

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

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.

Dec 1, 2025 · Estimate your conception date, fertile window, and pregnancy trimesters instantly with our easy-to-use Baby Conception Calculator tool.