On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 57 on 2017-03-09
In Chrome Android version 57 on 2017-03-16
In Edge version 16 on 2017-10-17
In Firefox version 76 on 2020-05-05 Note: repeat(auto-fill, ...) and repeat(auto-fit, ...) only support one repeated column (see bug 1341507). calc() doesn't work in repeat() (see bug 1350069).
In Firefox for Android version 79 on 2020-07-28 Note: repeat(auto-fill, ...) and repeat(auto-fit, ...) only support one repeated column (see bug 1341507). calc() doesn't work in repeat() (see bug 1350069).
Not in Internet Explorer
In Quest Browser version 5.0 on undefined
In Opera version 44 on 2017-03-21
In Opera Android version 43 on 2017-09-27
In Safari version 10.1 on 2017-03-27
In Safari on iOS version 10.3 on 2017-03-27
In Samsung Internet version 6.0 on 2017-08-23
In WebView Android version 57 on 2017-03-16
In WebView on iOS version 10.3 on 2017-03-27