Calculators

Mobile Apps

Due Date Calculator

Calculate Due Date

Our due date calculator will estimate your expected due date based on your menstrual cycle length and the date of your last period. The calculator assumes that you are in fact pregnant.

The date is calculated by first determining your last ovulation date and then adding 266 days. This is the standard method for estimating the due date of a pregnancy.

Widgets & Downloads

Due Date Calculator Widget

Add a due date calculator to your website.

Due Date Calculator Software

Download our due date calculator application for your PC.

Download Now

System Requirements:

  • Windows XP/Vista/7
  • 256MB Ram (512MB recommended)
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