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CLDR Plural Rule Parser

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CLDR Plural Rule Evaluator

Find out the plural form for a given number in a language

Quick start

git clone


Unlike English, for many languages, the plural forms are just not 2 forms. If you look at the CLDR plural rules table you can easily understand this. The rules are defined in a particular syntax (an eg: for Russian, the plural few is applied when the rule "n mod 10 in 2..4 and n mod 100 not in 12..14;" is passed).

This tool is a demonstration of a javascript parser for the plural rules in that syntax.

For a given number in a language, this tool tells which plural form it belongs. The plural rules are taken from the CLDR data file (plural.xml.

See a demonstration of the javascript parser at:


Before you can run the tests, make sure the submodules are updated:

git submodule update --init

Then open up ./test/index.html in your browser.


For transparency and insight into the release cycle, and to upgrading easier, we use the Semantic Versioning guidelines as much as possible.

Releases will be numbered with the following format:


And constructed with the following guidelines:

  • Breaking backward compatibility bumps the major (and resets the minor and patch)
  • New additions without breaking backward compatibility bumps the minor (and resets the patch)
  • Bug fixes and misc changes bumps the patch

For more information on SemVer, please visit

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