The fastest way to check your Excel version

Open Excel and look at the top left corner of the window. Click File, then click Account (or Help on a Mac). You will see your version number listed under "About Microsoft Excel" or "Product Information". The number looks like "Version 2404" or "Version 16.84" depending on whether you have a subscription or a one-time purchase.

If you do not have Excel open yet, you can also right-click the Excel icon on your desktop or in your Start menu, select Properties (Windows) or Get Info (Mac), and look for version details in the window that opens. The exact location varies slightly by operating system, but the version number will be visible somewhere in that information panel.

Key Takeaways

  • Your Excel version number appears in File > Account on Windows or File > Help on Mac, under "About Microsoft Excel".
  • Subscription versions (Microsoft 365) show a date-based version like "2404", while one-time purchase versions show a number like "16.84".
  • Right-clicking the Excel icon and viewing Properties or Get Info also shows version details without opening the program.
  • Knowing your version matters because some features, file formats, and security updates only work on newer versions.

Why your Excel version number matters

Different versions of Excel support different features. A spreadsheet built in Excel 2024 might not open correctly in Excel 2019, or it might open but lose formatting or formulas. If you are sharing files with coworkers or downloading templates from the internet, knowing your version tells you whether the file will work on your machine.

Version numbers also determine which security updates you receive. Older versions of Excel stop receiving updates after a certain date, which means vulnerabilities discovered later will not be patched. If you work with sensitive data, running an outdated version creates a real risk.

The difference between subscription and one-time purchase versions

Microsoft 365 subscribers (the monthly or yearly subscription) get version numbers that change every month, like "2404" for April 2024 or "2501" for January 2025. These versions update automatically in the background, usually without you noticing. You always have the latest features and security patches.

One-time purchase versions — like Excel 2021 or Excel 2019 — use a different numbering system. They show as "Version 16.84" or similar. These versions do not update automatically. Instead, Microsoft releases security patches periodically, but new features do not arrive unless you buy a newer version outright. If you bought Excel once and own it forever, you have a one-time purchase version.

How to tell if you have the latest version

If you have a Microsoft 365 subscription, your version updates automatically every month. You do not need to do anything. To check whether an update is waiting to install, go to File > Account and look for an "Update Options" button. If one appears, click it and select Update Now. Excel will restart and install the latest version.

If you have a one-time purchase version, check Microsoft's support page for your version year (2021, 2019, etc.) to see the latest available build number. Compare it to the version number in your File > Account window. If they match, you have the latest patches. If yours is older, you can read and install updates through Windows Update (on Windows) or Software Update (on Mac).

What to do if Excel will not tell you the version

Occasionally the File > Account menu does not display version information clearly, especially on older machines or after a corrupted installation. Try opening a blank spreadsheet, pressing Ctrl + A (Windows) or Command + A (Mac) to select all cells, then right-clicking and selecting Format Cells. The dialog that opens usually shows your version number at the bottom.

If that does not work, uninstall and reinstall Excel. On Windows, go to Settings > Apps > Apps & Features, find Microsoft Office in the list, click it, and select Uninstall. Then read Excel again from your Microsoft account. On Mac, drag the Microsoft Office folder from Applications to the Trash, empty the Trash, and reinstall from the App Store or your Microsoft account. Reinstalling usually takes 10 to 20 minutes and fixes version display problems.

Version numbers across different Excel platforms

Excel works on Windows computers, Macs, iPads, and phones, but the version numbers do not always match across platforms. You might have Excel 2024 on your Windows laptop but Excel for iPad, which uses a different version system. The web version (Excel Online) updates automatically and does not show a traditional version number at all.

If you are sharing files across devices, check the version on the device where you do most of your work. That is the version that matters for compatibility. If you work on a spreadsheet in Excel Online, then open it in Excel on your Mac, the Mac version is what determines whether all your formulas and formatting survive the transfer.

Frequently Asked Questions

Does my version number tell me if I can open a file someone sent me?

Not always. A newer version of Excel can almost always open files made in older versions. An older version usually cannot open files made in newer versions, or it opens them but loses some formatting. If someone sends you a file and it looks broken, ask them what version they used and compare it to yours.

What if I see two different version numbers in different places?

Windows sometimes shows a different number in Properties than in the File > Account menu. The number in File > Account is the one that matters for compatibility and updates. The Properties number is the installer version and can be ignored.

Can I downgrade to an older version of Excel?

Microsoft 365 subscribers cannot downgrade — the subscription always gives you the current version. If you have a one-time purchase version and want to go back to an older one, you would need to uninstall the current version and reinstall from an older installer file, which most people do not have. It is usually easier to stay current.

Do I need to update Excel if I only use basic features?

Security updates matter regardless of which features you use. Even if you only use straightforward formulas and formatting, an unpatched version can be exploited if you open a malicious file. Keeping Excel current takes almost no effort with Microsoft 365, and it is worth doing.