Find the macOS version number on your Mac

About This Mac shows the version and build of your Mac operating system.

Is your Mac operating system up to date? Does it meet the system requirements of an app or device that you want to use with your Mac? Which macOS versions are earlier or later than the version you're using? To help answer these questions, you need to know which macOS version you're using now.

Check About This Mac

From the Apple () menu in the corner of your screen, choose About This Mac. The operating system version appears beneath “macOS” or “OS X” in the window that opens. To see the build, click the version. This example shows macOS Sierra version 10.12, build 16A323:

The following tables show the version and build of each Mac operating system made available from the Mac App Store,* starting with the most recent. If you're not using the latest compatible version, learn how to update the software on your Mac.

macOS Sierra

Version Build
10.12.6 16G29
10.12.5 16F73
10.12.4 16E195
10.12.3 16D32
10.12.2 16C67
10.12.1 16B2555 or 16B2557
10.12 16A323

OS X El Capitan

Version Build
10.11.6 15G31
10.11.5 15F34
10.11.4 15E65
10.11.3 15D21
10.11.2 15C50
10.11.1 15B42
10.11 15A284

OS X Yosemite

Version Build
10.10.5 14F27
10.10.4 14E46
10.10.3
14D136
10.10.2 14C109
10.10.1 14B25
10.10 14A389

OS X Mavericks

Version Build
10.9.5 13F34
10.9.4 13E28
10.9.3 13D65
10.9.2 13C64
10.9.1 13B42
10.9 13A603

OS X Mountain Lion

Version Build
10.8.5 12F37, 12F45, or 12F2029
10.8.4 12E55
10.8.3 12D78
10.8.2 12C54, 12C60, or 12C2034
10.8.1 12B19
10.8 12A269

Earlier OS X versions

  • Lion 10.7
  • Snow Leopard 10.6
  • Leopard 10.5
  • Tiger 10.4
  • Panther 10.3
  • Jaguar 10.2
  • Puma 10.1
  • Cheetah 10.0

Learn more


* The Mac App Store is included with OS X Snow Leopard 10.6.6 and later.

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