Due Date Calculator
Calculate your estimated due date and track your pregnancy progress week by week.
Enter Your Information
How Due Date Calculation Works
1
Last Menstrual Period
We use the first day of your last period as the starting point for pregnancy calculation.
2
Naegele's Rule
Add 280 days (40 weeks) to your LMP date to get your estimated due date.
3
Trimester Calculation
Pregnancy is divided into three trimesters of approximately 13-14 weeks each.
Your Privacy is Protected
This calculator runs entirely in your browser. No data is sent to our servers or stored anywhere. Your personal information stays private.
Want More Advanced Tracking?
Try the bloom App
Get personalized pregnancy tracking, symptom logging, and milestone reminders with the bloom app.
