How do I see which version of Swift I'm using?

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I just created a new Swift project within Xcode. I am wondering which version of Swift it's using.

How can I see, in Xcode or the terminal, what version of Swift I am using inside my project?

Openminded answered 11/6, 2015 at 19:52 Comment(1)

Besides the title of #29140976 I find no similarity to this question that's enough to label this question as it's duplicate. The essence of this question is not how to find the version of Swift programmatically, but how to find the version of Swift in a general way (via terminal or Xcode or etc.). This is a big difference. – Openminded 6/6, 2016 at 9:54

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Project build settings have a block 'Swift Compiler - Languages', which stores information about Swift Language Version in key-value format. It will show you all available (supported) Swift Language Version for your Xcode and active version also by a tick mark.

Project ► (Select Your Project Target) ► Build Settings ► (Type 'swift_version' in the Search bar) Swift Compiler Language ► Swift Language Version ► Click on Language list to open it (and there will be a tick mark on any one of list-item, that will be current swift version).

Look at this snapshot, for easy understanding:

With help of following code, programmatically you can find Swift version supported by your project.

#if swift(>=5.9)
print("Hello, Swift 5.9")

#elseif swift(>=5.8)
print("Hello, Swift 5.8")

#elseif swift(>=5.7)
print("Hello, Swift 5.7")

#elseif swift(>=5.6)
print("Hello, Swift 5.6")

#elseif swift(>=5.5)
print("Hello, Swift 5.5")

#elseif swift(>=5.4)
print("Hello, Swift 5.4")

#elseif swift(>=5.3)
print("Hello, Swift 5.3")

#elseif swift(>=5.2)
print("Hello, Swift 5.2")

#elseif swift(>=5.1)
print("Hello, Swift 5.1")

#elseif swift(>=5.0)
print("Hello, Swift 5.0")

#elseif swift(>=4.2)
print("Hello, Swift 4.2")

#elseif swift(>=4.1)
print("Hello, Swift 4.1")

#elseif swift(>=4.0)
print("Hello, Swift 4.0")

#elseif swift(>=3.2)
print("Hello, Swift 3.2")

#elseif swift(>=3.0)
print("Hello, Swift 3.0")

#elseif swift(>=2.2)
print("Hello, Swift 2.2")

#elseif swift(>=2.1)
print("Hello, Swift 2.1")

#elseif swift(>=2.0)
print("Hello, Swift 2.0")

#elseif swift(>=1.2)
print("Hello, Swift 1.2")

#elseif swift(>=1.1)
print("Hello, Swift 1.1")

#elseif swift(>=1.0)
print("Hello, Swift 1.0")

#endif

Here is result using Playground (with Xcode 11.x)

Syneresis answered 6/9, 2017 at 17:10 Comment(17)

I think this is correct answer. Easier than calling terminal. (especially if you have different version of Xcode installed) – Kathie 12/9, 2017 at 18:4

This is the correct answer because swift version is configured on a per target basis. – Village 3/10, 2017 at 23:42

I don't see this propoerty in my project with Xcode 8.1 – Panpipe 9/11, 2017 at 9:15

you can see this property on latest versions of xcode – Newton 25/11, 2017 at 8:1

If you are using cocoa pods and downgrade swift this way you might have to reinstall your pods for them to compile properly with the new swift version. – Ay 11/12, 2018 at 14:34

It the value is Unspecified, how can you tell what you're compiling against? – Birdwatcher 20/12, 2018 at 17:23

I could see this in Xcode 10.0. In 10.1, I can't find it anymore. Where did it go? – Minotaur 14/1, 2019 at 21:2

@JonMcClung - The same option is availble in Xcode 10.1 also. I just checked it. – Syneresis 17/1, 2019 at 9:41

@Krunal, yeah my bad. I was checking on the wrong project -- it was Objective-C based and didn't have any Swift code, so that's probably why. – Minotaur 17/1, 2019 at 15:6

What about when it says 'unspecified'? – Surfboarding 15/7, 2019 at 19:33

@Surfboarding - Can you please share your code, so we can check the issue. Almost we have covered all the versions of Swift there may not be such scope. Either you may be trying with Objective-C project. – Syneresis 16/7, 2019 at 9:32

I'm using this approach to make a table of which versions of Swift are supported by each version of Xcode: https://mcmap.net/q/55547/-what-versions-of-swift-are-supported-by-what-versions-of-xcode – Charlinecharlock 15/10, 2019 at 21:6

When I look in my project's build settings it shows 'Swift 5'. If I open a terminal and type 'swift -version' it returns 'Swift version 5.1.3' so using the terminal is giving more detailed information. I'm using Xcode version 11.3.1 – Deletion 28/1, 2020 at 13:2

For newbies like me, when XCode 11 looks a little different, note that you simply need to click on the project icon at the top of the file hierarchy on the left sidebar to view this Project UI, the blueprint icon with your project name above the folder containing your swift files. Then this info is easily accessible under Swift Compiler - Language (in Swift Language Version) in the Build Settings tab. – Ultann 6/6, 2020 at 15:57

The max version is not precise there xcrun swift -version is good one – Sternberg 15/7, 2020 at 6:24

This is helpful for editors and environments other than Xcode! – Robillard 16/3, 2022 at 3:31

As of Oct 2, 2023...Xcode 14.3 prints Swift 5.8, Xcode 15.0 prints Swift 5.9. In case this helps anyone. – Muskogee 3/10, 2023 at 2:29

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What I do is say in the Terminal:

$ xcrun swift -version

Output for Xcode 6.3.2 is:

Apple Swift version 1.2 (swiftlang-602.0.53.1 clang-602.0.53)

Of course that assumes that your xcrun is pointing at your copy of Xcode correctly. If, like me, you're juggling several versions of Xcode, that can be a worry! To make sure that it is, say

$ xcrun --find swift

and look at the path to Xcode that it shows you. For example:

/Applications/Xcode.app/...

If that's your Xcode, then the output from -version is accurate. If you need to repoint xcrun, use the Command Line Tools pop-up menu in Xcode's Locations preference pane.

Eurythermal answered 11/6, 2015 at 20:13 Comment(5)

You can also use xcode-select -p to print the path to the Xcode that xcrun will use, and sudo xcode-select -s /path/to/Xcode.app to change it. – Idiolect 15/9, 2015 at 3:32

I just started to learn ios development and I am surprised that xcode does not let you choose the version of swift nor even let you know the version from GUI. – Simarouba 8/2, 2016 at 2:13

@RadekWilczak I don't know what you mean by "should be". I just copied the posted command and pasted into Terminal and hit Return, and it works. So maybe there's another alternative, but what I said isn't wrong. – Eurythermal 1/9, 2016 at 15:18

This gave me the wrong answer. Because swift is configured per target. See the answer below from @Krunal for the best answer. – Village 3/10, 2017 at 23:42

I agree with all the "the correct way is to set the SWIFT_VERSION" per project. However, in earlier Xcode versions like 8.2, it doesn't state clearly in the UI what version of XCode is supported in the project, and just has "Use Legacy Swift Language Version" in the UI with Yes, No, unspecified. The command line approach is extremely useful to be able to quickly query the answer to what is the max swift version available. – Szabadka 15/11, 2018 at 17:26

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583

Project build settings have a block 'Swift Compiler - Languages', which stores information about Swift Language Version in key-value format. It will show you all available (supported) Swift Language Version for your Xcode and active version also by a tick mark.

Project ► (Select Your Project Target) ► Build Settings ► (Type 'swift_version' in the Search bar) Swift Compiler Language ► Swift Language Version ► Click on Language list to open it (and there will be a tick mark on any one of list-item, that will be current swift version).

Look at this snapshot, for easy understanding:

With help of following code, programmatically you can find Swift version supported by your project.

#if swift(>=5.9)
print("Hello, Swift 5.9")

#elseif swift(>=5.8)
print("Hello, Swift 5.8")

#elseif swift(>=5.7)
print("Hello, Swift 5.7")

#elseif swift(>=5.6)
print("Hello, Swift 5.6")

#elseif swift(>=5.5)
print("Hello, Swift 5.5")

#elseif swift(>=5.4)
print("Hello, Swift 5.4")

#elseif swift(>=5.3)
print("Hello, Swift 5.3")

#elseif swift(>=5.2)
print("Hello, Swift 5.2")

#elseif swift(>=5.1)
print("Hello, Swift 5.1")

#elseif swift(>=5.0)
print("Hello, Swift 5.0")

#elseif swift(>=4.2)
print("Hello, Swift 4.2")

#elseif swift(>=4.1)
print("Hello, Swift 4.1")

#elseif swift(>=4.0)
print("Hello, Swift 4.0")

#elseif swift(>=3.2)
print("Hello, Swift 3.2")

#elseif swift(>=3.0)
print("Hello, Swift 3.0")

#elseif swift(>=2.2)
print("Hello, Swift 2.2")

#elseif swift(>=2.1)
print("Hello, Swift 2.1")

#elseif swift(>=2.0)
print("Hello, Swift 2.0")

#elseif swift(>=1.2)
print("Hello, Swift 1.2")

#elseif swift(>=1.1)
print("Hello, Swift 1.1")

#elseif swift(>=1.0)
print("Hello, Swift 1.0")

#endif