Online MIME Headers Decoder (RFC 2047)

This tool is an online decoder for RFC 2047, the Internet standard for representing non-ASCII text in MIME message headers.

It is not intended to be used as a validator, and assumes that any supplied input conforms to the standard. In the case of non-conforming input, behaviour is undefined, although it would typically result in the encoded word (or its incorrectly-formed portions) being displayed verbatim. The use of characters sets not supported by the decoder would also result in the encoded word being displayed verbatim.

This tool is still in experimental status. Please forward any feedback and report any issues to

First published: 2012-04-14.
Last updated: 2014-02-10.