Der Geburtstermin wird typischerweise berechnet, indem 280 Tage (40 Wochen) zur letzten Periode addiert werden.

• Pregnancy weeks are calculated from the first day of your last menstrual period
• The due date is calculated as LMP + 280 days
• Actual delivery often occurs within 2 weeks before or after the due date

1. Wählen Sie letzte Periode oder Empfängnis. 2. Geben Sie das Datum ein. 3. Sehen Sie Geburtstermin und aktuelle Woche.

1. Enter the first day of your last menstrual period accurately
2. Adjust if your average cycle is not 28 days
3. Check current week, due date, and trimester in the results

This calculator is for reference only. Consult with your healthcare provider for accurate information.

• The calculation results are estimates
• Ultrasound can provide more accurate week estimates
• Consult your healthcare provider immediately if you have any concerns