JSON and CSV Converter

How to use this tool

The first row is a header. Quoted delimiters, embedded newlines and escaped double quotes are supported. Rows must have consistent column counts. Exports prefix spreadsheet formula-leading cells with an apostrophe for safer opening in spreadsheet apps. Nested JSON values are serialized as JSON strings in CSV. CSV values remain strings when converted to JSON.

Your inputs and files are processed in this browser. This tool does not send them to a server or save an input history. Copy or download any results you want to keep.