The Conception Calculator

Conceived on Valentine's Day? Here's the Due Date

Due dates & conception. Updated . Calculated with the standard pregnancy dating method used by ACOG and the NHS.

If conception happened on Valentine's Day (February 14), the baby would be due around November 7 the following year.

Conception dateFebruary 14
Estimated due dateNovember 7
Likely due window (37–42 weeks)October 17 – November 21
Last period probably startedJanuary 31

Remember that sex and conception aren't always on the same day: sperm can survive for up to five days, so a holiday celebration could lead to conception a few days later.

Check your own dates with the due date calculator.

Due Date Calculator: Estimate your due date from the first day of your last period.

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This article is general information, not medical advice. Talk to a doctor or midwife about your own pregnancy or fertility.