Page Text: Associate professor, Hussman School of Journalism and Media, UNC-Chapel Hill
ReCal: reliability calculation for the masses
UPDATE 5/22/17: By popular demand, ReCal OIR now allows missing data! Click the link for details.
ReCal (“Reliability Calculator”) is an online utility that computes intercoder/interrater reliability coefficients for nominal, ordinal, interval, or ratio-level data. It is compatible with Excel, SPSS, STATA, OpenOffice, Google Docs, and any other database, spreadsheet, or statistical application that can export comma-separated ( CSV ), tab-separated ( TSV ), or semicolon-delimited data files.
ReCal consists of three independent modules each specialized for different types of data. The following table will help you select the module that best fits your data. (If you do not know whether your data are considered nominal, ordinal, interval, or ratio, please consult this Wikipedia article to find out more about these levels of measurement.)
Level of measurement