The Conception Calculator

Conceived on Canada 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 Canada Day (July 1), the baby would be due around March 24 the following year.

Conception dateJuly 1
Estimated due dateMarch 24
Likely due window (37–42 weeks)March 3 – April 7
Last period probably startedJune 17

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.