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Pregnancy Due Date Calculator

A calm, clinician-style estimate for your baby’s due date. Results are estimates only.

Calculate based on

No data stored

Cannot be a future date.

Enter a number between 20 and 45.

Pregnancy Due Date Calculator

A calm, clinician-style estimate for your baby’s due date. Results are estimates only.

Calculate based on

No data stored

Cannot be a future date.

Enter a number between 20 and 45.

Frequently Asked Questions

Most due dates are estimated by adding 280 days (or 40 weeks) to the first day of your last menstrual period (LMP). This gives a general idea of when your baby may arrive.