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 2018-07-01
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