Enca is an Extremely Naive Charset Analyser. It detects character set and encoding of text files and can also convert them to other encodings using either a built-in converter or external libraries and tools like libiconv, librecode, or cstocs.
Currently, it has support for Belarussian, Bulgarian, Croatian, Czech, Estonian, Latvian, Lithuanian, Polish, Russian, Slovak, Slovene, Ukrainian, Chinese, and some multibyte encodings (mostly variants of Unicode) independent on the language.
This package also contains shared Enca library other programs can make use of.
Install Enca if you need to cope with text files of dubious origin and unknown encoding and convert them to some reasonable encoding.