Estimate your due date based on last menstrual period or conception date.
For informational purposes only. This tool does not constitute medical advice. Consult a healthcare professional before making health decisions.
Enter a date to estimate your due date.
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Explore guide →Most due dates are estimated using the first day of your last menstrual period (LMP), which adds 40 weeks (280 days). If you know your conception date, an estimate of 38 weeks (266 days) is often used.
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