Pregnancy Calculator
Track your pregnancy week and trimester by due date.
Pregnancy Calculator
Enter your values and calculate
How This Calculator Works
Pregnancy is counted from the estimated conception date (due date minus 266 days). A full term is about 40 weeks, divided into three trimesters. Enter your due date to see how far along you are.
Formula
Conception = Due Date − 266 days; Weeks = days pregnant / 7
Example
A due date 140 days away means you're about 18 weeks (second trimester).
Practical Use Cases
- Tracking pregnancy milestones
- Planning appointments
- Parental leave