Pregnancy Due Date Calculator

Calculate your estimated due date

Estimate your pregnancy due date based on last menstrual period, conception date, ultrasound timing, or IVF transfer date.

Due Date Calculator
Calculate your estimated due date

Typical range: 21-35 days. Default is 28 days.

Medical Disclaimer: This calculator provides estimates for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Always consult with a qualified healthcare provider about any questions you may have regarding your pregnancy or medical conditions.

How This Calculator Works

Calculate your estimated due date in 3 simple steps.

1

Enter your dates

Provide the information you have available, such as the first day of your last menstrual period, a known conception date, ultrasound timing, or IVF transfer date.

2

Calculate your estimate

The calculator applies standard clinical dating formulas commonly used in pregnancy care to generate an estimated due date and gestational age.

3

Understand the result

View your estimated due date along with contextual information about how pregnancy dating works and why estimates may vary.

Trusted Pregnancy Due Date Calculator

Clinically Based Calculations

This due date calculator uses standard clinical dating formulas commonly applied in pregnancy care, including calculations based on last menstrual period, conception timing, ultrasound measurements, and IVF transfer dates.

Private & Secure

Your information stays confidential. All data entered is processed securely and never shared with third parties. You can use the calculator anonymously, without creating an account.

Instant Estimates

Get an estimated due date immediately after entering your information. Results are presented clearly and are intended to support understanding and discussion with a healthcare provider.