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Pregnancy Due Date Calculator

Estimate your due date and how far along you are from the first day of your last period.

How to use

  1. Enter the first day of your last menstrual period.
  2. See your estimated due date.
  3. Check roughly how many weeks along you are.
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FAQ

How is the due date estimated?

It adds 280 days (40 weeks) to the first day of your last period — the standard estimate.

Is this a substitute for medical advice?

No — it's an estimate. Your healthcare provider gives the most accurate due date, often via ultrasound.

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