K-Alpha Calculator–Krippendorff’s Alpha Calculator: A user-friendly tool for computing Krippendorff’s Alpha inter-rater reliability coefficient

Krippendorff’s Alpha is a measure for assessing inter-rater reliability, facilitating triangulated evaluations among multiple raters. Indeed, Krippendorff’s Alpha is key in validating the depend- ability of human assessments, thereby reinforcing the robustness of human-based choices in con- texts where interpretive variability could otherwise undermine the research outcomes. Despite its versatility across various data types, the procedure for computing this coefficient might limit its applicability for researchers unfamiliar with specialised statistical software. Addressing this issue, this paper introduces the “K-Alpha Calculator ”—Krippendorff’s Alpha Calculator —a freely accessible, user-friendly, web application available at https://www.k-alpha.org designed for easy computation of Krippendorff’s Alpha. By offering a web interface without any software depen- dency, the K-Alpha Calculator seeks to promote the broader integration of such a reliability metric in research processes. We envisage that the tool’s contribution could support researchers in enhancing methodological rigour, fostering conclusions are rooted in triangulated interpretations and assessments. The K-Alpha Calculator is both a computational tool and an educational re- source, encouraging more researchers to include reliability measures in their studies.