Advanced Pregnancy Calculator
Pregnancy Due Date Calculator
Estimate your due date, current pregnancy week, conception date and key milestones using the first day of your last menstrual period.
Estimated Conception
Current Pregnancy Week
End of First Trimester
Estimated Due Date
How this due date calculator works
This calculator estimates your due date using the first day of your last menstrual period and a standard pregnancy length of about 280 days.
If your cycle is longer or shorter than 28 days, the estimated due date is adjusted based on your average cycle length.
This tool gives an estimate only. A doctor or ultrasound can provide a more accurate due date.