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Pregnancy Due Date Calculator

Calculate your pregnancy due date and track important milestones

Free to use, no watermarks, runs in your browser—nothing uploads to our servers

First Day of Last Menstrual Period (LMP)

IMPORTANT DISCLAIMER: This calculator provides an estimate only. Due dates are predictions, and only about 5% of babies are born on their exact due date. This tool is for informational purposes only and does not replace professional medical advice. Please consult with your healthcare provider for personalized prenatal care, accurate dating (especially via ultrasound), and medical guidance throughout your pregnancy.

Report a bug

If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.