Pregnancy Due Date Calculator

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Estimate your baby's due date from your last period or conception date, with gestational age, trimester and conception date. Free and instant.

days
The typical length of your cycle, used to adjust the estimate.
Estimated due date –
Gestational age today –
Trimester –
Estimated conception –
Uses Naegele's rule: due date = last period + 280 days, adjusted for cycle length. Conception is assumed about 14 days after the last period. An estimate only — confirm with your healthcare provider.
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