WORKDAY Formula Excel

What this does

WORKDAY returns the date a given number of working days from a start date, skipping Saturdays, Sundays and any holidays you list. It is the counterpart to NETWORKDAYS, which counts the days between two dates rather than projecting forward. The holidays argument is what makes it trustworthy in practice: without a holiday range it will happily land a deadline on Christmas Day. Its sibling WORKDAY.INTL takes a weekend-pattern argument, which matters for regions where the weekend is not Saturday and Sunday. Keep the inputs visible and clearly labelled and the whole thing stays auditable — anyone who opens the file later, including you, can see at a glance exactly what feeds the result and change one assumption without hunting through the formula. For “workday formula excel”, the reliable version is a short checking loop, not just the first command that appears to work. Run it on a deliberately small range first, watch how the affected formula change, and only then apply the same setup to the full sheet. When a formula is involved, keep the inputs labelled beside it, reference cells instead of typing values, and apply number formatting only after the result checks out. That is what makes a calculation you can defend to a CFO or an auditor useful in real work: repeatable, auditable, and not dependent on memory or luck.

A worked example

A ten-working-day SLA from a ticket date, with public holidays listed in H2:H20: =WORKDAY(A2, 10, $H$2:$H$20). Counting backwards to find when work must start: =WORKDAY(deadline, -5, $H$2:$H$20). A Friday-Saturday weekend: =WORKDAY.INTL(A2, 10, 7, $H$2:$H$20). WORKDAY turns an SLA or lead time into a real calendar date, which is the number a customer actually gets told. One habit worth forming early: name the cells that hold your inputs, so the formula reads in plain language instead of a string of cell addresses. A reviewer — or you in three months — can then follow the logic without decoding what B7 and D2 were supposed to mean, which is most of what makes a sheet maintainable.

In Google Sheets

Google Sheets handles this almost identically to Excel. The formula syntax above is the same, and the menu lives under a slightly different label rather than a ribbon tab. Use the platform toggle at the top of the page to switch every keyboard shortcut between Windows and Mac, and expect at most cosmetic differences in naming. The aim was to get you unstuck fast and leave you a little more capable than a copy-paste would. The answer is at the top, the tool proves it, and the detail above shows why it holds — so the next time a colleague asks, you can answer without reaching for search. Here is the takeaway for “workday formula excel”: copy the answer if you are busy, but if you have a spare few minutes, rebuild the example in Excel yourself with the tool above open beside it. That single pass — type it, run it, watch the result move when you change an input — is what turns a formula you found into a technique you trust. Keep your inputs labelled and referenced, never hard-coded, and the same sheet stays correct and auditable as it grows. Done that way, you will not need to look this up again, and you will be the person others ask.

Common mistakes

• Omitting the holidays range, which lets a deadline land on a public holiday.
• Forgetting to anchor the holiday range before filling down, so later rows check a shrinking list.
• Expecting the start date to count as day one; it does not — counting begins the following working day.

Frequently asked questions