Is your Mac operating system (macOS) up to date? Is it the macOS version required by a product or feature that you want to use? Which macOS versions are earlier (older) or later (more recent) than the version you're using? To answer these questions, you need to know which version you're using now.
If your macOS isn't up to date, you may be able to update to a later version of macOS.
Check About This Mac
From the Apple () menu in the corner of your screen, choose About This Mac. You'll see the macOS name, such as macOS Mojave, followed by its version number. If you also need to know the build number, just click the version number.
This example shows macOS Mojave version 10.14 build 18A391:
Below are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Mojave. And as updates to that macOS become available from the App Store or Software Update preferences, additional version numbers and builds are added to its table.
Mojave
Learn how to upgrade to macOS Mojave, the latest version of macOS.
| Version | Build |
|---|---|
| 10.14 | 18A391 |
High Sierra
| Version | Build |
|---|---|
| 10.13.6 | 17G65 |
| 10.13.5 | 17F77 |
| 10.13.4 | 17E199 or 17E201 |
| 10.13.3 | 17D47, 17D102, 17D2047, or 17D2102 |
| 10.13.2 | 17C88, 17C89, 17C205, or 17C2205 |
| 10.13.1 | 17B48, 17B1002, or 17B1003 |
| 10.13 | 17A365 or 17A405 |
Sierra
| Version | Build |
|---|---|
| 10.12.6 | 16G29, 16G1036, 16G1114, or 16G1212 |
| 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 |
El Capitan
| Version | Build |
|---|---|
| 10.11.6 | 15G31, 15G17023, 15G18013, or 15G19009 |
| 10.11.5 | 15F34 |
| 10.11.4 | 15E65 |
| 10.11.3 | 15D21 |
| 10.11.2 | 15C50 |
| 10.11.1 | 15B42 |
| 10.11 | 15A284 |
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 |
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 |
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 versions of OS X
- 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
