Calculating your estimated due date (EDD) provides clear milestone markers throughout pregnancy. Tracking gestational weeks helps schedule routine prenatal checkups and monitor fetal growth.
Pregnancy Due Date Calculator
Reviewed
ResultUpdates as you type
Current Gestational Age (Weeks)10weeks
Days Remaining Until Due Datedays210
Current Trimester1
- Estimated Conception Day (Cycle Day) days
- 14
- 1st Trimester End (Day) days
- 84
- 2nd Trimester End (Day) days
- 189
Calculate your estimated pregnancy due date, current gestational age in weeks, and trimester milestone timeline.
Calculate your estimated pregnancy due date, current gestational week, and key developmental milestones.
How to use
- Enter your average menstrual cycle length (default is 28 days).
- Enter the number of days since the first day of your last menstrual period (LMP).
- Read your current gestational week, remaining days, and trimester status.
Formula
Naegele's rule calculates the estimated date of delivery (EDD) by adding 280 days to the first day of your last period.
Naegele's Rule
Due Date = LMP + 280 days + (Cycle Length - 28)Frequently asked questions
How accurate is Naegele’s rule for calculating due date?
Naegele’s rule provides a standard 40-week estimate; around 5% of babies are born on their exact predicted due date.
How are pregnancy trimesters divided?
The first trimester is weeks 1-12, the second trimester is weeks 13-27, and the third trimester is weeks 28-40+.