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Asked: May 10, 20262026-05-10T18:36:04+00:00 2026-05-10T18:36:04+00:00

How can I calculate the number of work days between two dates in SQL

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How can I calculate the number of work days between two dates in SQL Server?

Monday to Friday and it must be T-SQL.

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2026-05-10T18:36:05+00:00Added an answer on May 10, 2026 at 6:36 pm

For workdays, Monday to Friday, you can do it with a single SELECT, like this:

DECLARE @StartDate DATETIME DECLARE @EndDate DATETIME SET @StartDate = '2008/10/01' SET @EndDate = '2008/10/31'   SELECT    (DATEDIFF(dd, @StartDate, @EndDate) + 1)   -(DATEDIFF(wk, @StartDate, @EndDate) * 2)   -(CASE WHEN DATENAME(dw, @StartDate) = 'Sunday' THEN 1 ELSE 0 END)   -(CASE WHEN DATENAME(dw, @EndDate) = 'Saturday' THEN 1 ELSE 0 END)

If you want to include holidays, you have to work it out a bit…

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