This page is out of date, see http://cldr.unicode.org/index/downloads#TOC-JSON-Data for details of the JSON data.
The CLDR Technical Committee is pleased to announce a preliminary publishing of the CLDR 22.1 main and supplemental data in JSON format.
In addition, we now have a conversion utility that can be used to convert LDML into the JSON format, and this utility ( Ldml2JsonConverter ) will be published as part of the standard CLDR tools collection in the next release. We intend to enhance this utility to provide consumers a way to produce small subsets ( based on XPaths ) that are likely more useful than the full data set.
The JSON specification for CLDR data can be found here.
To access the CLDR 22.1 data in the JSON format, click HERE