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Conceived in May: When Is Your Due Date?

If you conceived in May, your baby is most likely due in January or February. Find the date for each day below.

Or your ovulation / insemination date.

Your estimated due date, week of pregnancy and trimester will appear here.

Due dates for a May 2027 conception

A due date is about 266 days (38 weeks) after conception. The table shows the estimated due date for each day of May 2027. For other years the dates are the same or within a day.

Conception dateEstimated due date
May 1, 2027Saturday, January 22, 2028
May 2, 2027Sunday, January 23, 2028
May 3, 2027Monday, January 24, 2028
May 4, 2027Tuesday, January 25, 2028
May 5, 2027Wednesday, January 26, 2028
May 6, 2027Thursday, January 27, 2028
May 7, 2027Friday, January 28, 2028
May 8, 2027Saturday, January 29, 2028
May 9, 2027Sunday, January 30, 2028
May 10, 2027Monday, January 31, 2028
May 11, 2027Tuesday, February 1, 2028
May 12, 2027Wednesday, February 2, 2028
May 13, 2027Thursday, February 3, 2028
May 14, 2027Friday, February 4, 2028
May 15, 2027Saturday, February 5, 2028
May 16, 2027Sunday, February 6, 2028
May 17, 2027Monday, February 7, 2028
May 18, 2027Tuesday, February 8, 2028
May 19, 2027Wednesday, February 9, 2028
May 20, 2027Thursday, February 10, 2028
May 21, 2027Friday, February 11, 2028
May 22, 2027Saturday, February 12, 2028
May 23, 2027Sunday, February 13, 2028
May 24, 2027Monday, February 14, 2028
May 25, 2027Tuesday, February 15, 2028
May 26, 2027Wednesday, February 16, 2028
May 27, 2027Thursday, February 17, 2028
May 28, 2027Friday, February 18, 2028
May 29, 2027Saturday, February 19, 2028
May 30, 2027Sunday, February 20, 2028
May 31, 2027Monday, February 21, 2028

What this means for your baby’s birthday

A May conception gives due dates from January 22, 2028 to February 21, 2028. Because most babies are born within about two weeks of the due date, the actual birthday could fall in the month before or after. Conception dates are rarely known exactly: if you are working from intercourse dates, conception may have happened a few days later.

Other conception months

January · February · March · April · June · July · August · September · October · November · December

Know the exact day? Enter it in the calculator above or the Conception Due Date Calculator.

Frequently asked questions

If I conceived in May, when is my due date?

In January or early February — 266 days after the conception date. The table on this page lists each day.

How is a due date calculated from conception?

Add 266 days (38 weeks) to the conception date.

Conception Due Date CalculatorDue date from your conception or ovulation date.Conception Date CalculatorWork out when you conceived from your last period or due date.Due Date CalculatorEstimate your due date from your last period, conception date or IVF transfer.Baby Due Date CalculatorWhen will my baby be born? Birth month, sign and birthstone.Date CalculatorDays between dates, or add and subtract days, weeks, months and years.Pregnancy CalculatorYour week of pregnancy, due date, trimester and what is happening this week.

Formulas reviewed and page updated October 6, 2026.