The Conception Calculator

Conceived on The Fourth of July? 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 the Fourth of July (July 4), the baby would be due around March 27 the following year.

Conception dateJuly 4
Estimated due dateMarch 27
Likely due window (37–42 weeks)March 6 – April 10
Last period probably startedJune 20

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.