Pregnancy Calculator
Estimated Due Date:
Gestational Age:
Trimester:
Conception Date:
Days Remaining:
Pregnancy Progress:
About Pregnancy Calculator
Our pregnancy calculator helps you estimate your due date based on either your last menstrual period (LMP) or conception date. The calculator uses the standard Naegele's rule for LMP calculation (280 days from LMP) or adds 266 days to the conception date.
How It Works
- LMP Method: Adds 280 days (40 weeks) to your last menstrual period date
- Conception Method: Adds 266 days (38 weeks) to your conception date
- Trimester breakdown: 1st (weeks 1-12), 2nd (weeks 13-27), 3rd (week 28+)
Important Notes
This calculator provides estimates only. Always consult with your healthcare provider for medical advice. Only about 5% of women deliver on their exact due date - most deliver within two weeks before or after.