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Conceived in January: When Is Your Due Date?

If you conceived in January, your baby is most likely due in September or October. 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 January 2027 conception

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

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

What this means for your baby’s birthday

A January conception gives due dates from September 24, 2027 to October 24, 2027. 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

February · March · April · May · 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 January, when is my due date?

In September or early October — 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.