Pregnancy Due Date Calculator
Calculate your estimated baby due date and trimesters.
Pregnancy Due Date Calculator
Find out exactly when you'll meet your little one
How is the Due Date Calculated?
For most pregnancies, the estimated due date is calculated by adding 280 days (40 weeks) to the first day of your Last Menstrual Period (LMP), assuming a standard 28-day cycle. If your cycle is longer or shorter, our calculator automatically adjusts the conception date to give you a more accurate result.
Trimester Breakdown
Weeks 1 through 13. This is when the most crucial development takes place.
Weeks 14 through 27. Often considered the most comfortable period of pregnancy.
Weeks 28 to 40 (and beyond). The final stretch before your baby arrives!
Disclaimer: This calculator provides an estimate. Only about 5% of babies are born on their exact due date. Please consult with your healthcare provider for medical advice.