Due Date Calculator
Week and due date

Enter the first day of your last period to see how far along you are and your due date.

Results are for information only and are not medical, financial or legal advice.

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About the Due Date Calculator

Enter the first day of your last period to see how far along you are and your due date.

All calculations run in your browser; nothing you enter is sent to a server. No sign-up; works on phone, tablet and computer.

How to use the Due Date Calculator

  1. Enter your valuesType amounts, dates or measurements in the fields above.
  2. See the resultThe result updates as you type — no button needed.
  3. Copy itCopy the result with one tap to share it.

Frequently asked questions

Is the Due Date Calculator free?

Yes, completely free with no account.

Is my data stored?

No. Calculations run on your device and nothing is sent.

How accurate are the results?

Standard formulas are used; results are for information only.