Due Date Calculator

Use the Due Date Calculator to determine the likely due date of your baby. Keep in mind that only 6% of babies are actually born on their due date. The Due Date Calculator shows the likely conception date, the end of the first and the second trimester dates - and of course the due date.

How to use the Due Date Calculator

Enter the date of your last menstrual period and the number of days in your menstrual cycle into the Due Date calculator, and click on the Calculate button.

On average, there are 28 days in a menstrual cycle, but it can last from as little as 22 to as many as 44 days.

Did you find the Date Due Calculator useful? For more details see Pregnancy calculator. See other medical calculators: Ovulation calculator
See financial calculators: Mortgage calculator

Script running the Date Due Calculator

The date due calculator is powered by JavaScript and created with JavaScript Editor.

JavaScript is easy to use and great fun! Become JavaScript expert in record time with JavaScript Editor's hands-on step-by-step tutorials and enjoy:

• Creating your own scripts
• Using other people's scripts - there are thousands of free ones on the web, and
• Adding life and interactivity to your web pages!