BibTeX to CSL-JSON
Convert BibTeX to CSL-JSON, the format used by Zotero, Pandoc and citeproc. Free, no sign-up, and custom fields are kept so you can convert back without loss.
Paste your bibliography
Your fields survive the trip
Most converters keep only the handful of fields they understand and silently discard the rest, so a conversion quietly costs you abstracts, keywords, ISSNs and any custom fields you rely on. This one reads everything into CSL-JSON and writes back every field the target format can represent. Converting to CSL-JSON and back returns your entries exactly as you supplied them, custom fields included. Converting between BibTeX and RIS keeps everything the two formats share — a field one format has no equivalent for is the only thing that cannot come along.