Due date calculator

Calculate your baby’s expected due date based on the first day of your last menstrual period, conception date, or IVF transfer. Additionally, you will receive important pregnancy milestones and a detailed analysis.

How to calculate your due date

With this calculator, you can calculate your baby's expected due date and track important pregnancy milestones. The tool considers various calculation methods and offers a detailed pregnancy overview. Follow these simple steps:

Choose calculation method

Decide between last menstrual period (LMP), conception date, or IVF transfer date. The LMP method is most commonly used in medicine.

Enter reference date

Enter the corresponding date - depending on the chosen method, the first day of your last menstrual period, conception date, or IVF transfer date.

Adjust cycle length (optional)

With the LMP method, you can specify your individual cycle length (21-35 days, default: 28 days) for a more accurate calculation.

Activate detailed information

Choose whether you want to see important pregnancy milestones and trimester information additionally displayed.

Calculate two dates

Click "Calculate due date" to get your personalized pregnancy plan.

Analyze results

The tool shows you the expected delivery date, your current pregnancy week, trimester, and remaining days until birth.

Track milestones

With details activated, you see important dates like the end of the first trimester (12th week), organ screening (20th week), and other milestones.

Use visualization

The graphical pregnancy scale shows your current progress through the three trimesters.