CHET-C, or Chapel Hill Electronic Text-Converter, is a browser based software tool designed to convert digital texts that employ standard epigraphic conventions such as the Leiden sigla into EpiDoc-compliant XML files.

The tool can be accessed online at http://www.stoa.org/projects/epidoc/stable/chetc-js/chetc.html. Fragments of epigraphic text using standard sigla (eg Leiden convention markup) are pasted into the tool and Epidoc compliant XML is generated.

Prior versions exist (MSAccess + VBA and Java, both now deprecated) for use by those without stabel web access or who wish to customise the underlying regular expressions to process non standard sigla