Due Date Calculator
Calculate your pregnancy due date from last period
Based on Naegele's rule. Consult your OB-GYN for accurate dating.
About Due Date Calculator
Calculate your pregnancy due date from last period This free online calculator provides instant results with no sign-up required. All calculations are performed locally in your browser for complete privacy and security.
How to Use
- Enter your values in the calculator fields above
- Click the Calculate button to see your results
- Review the detailed breakdown of your results
Why Use Due Date Calculator?
- Instant, accurate calculations
- 100% free with no registration
- All processing happens in your browser
- Mobile-friendly responsive design
- No personal data collected or stored