Due Date Calculator
Estimate your baby's due date from your last period.
How to Use This Calculator
- Enter your details in the fields above — all fields are used only in your browser, nothing is stored or sent anywhere.
- Double-check your units (cm/kg) before submitting for the most accurate result.
- Click Calculate to see your personalized result instantly.
- Results are estimates based on established formulas — for medical decisions, always confirm with a healthcare professional.
Frequently Asked Questions
How is my due date calculated?
Using Naegele's rule: 280 days (40 weeks) from the first day of your last menstrual period.