Convert CSV and JSON — right in your browser
Fast, private data-conversion tools. Nothing is uploaded anywhere; every conversion runs on your own device, so it's instant and safe for sensitive data.
Convert
CSV → JSON
Turn CSV or TSV into clean JSON — array of objects or array of arrays.
ConvertJSON → CSV
Turn a JSON array of objects into CSV or TSV, ready for Excel or Sheets.
FormatJSON Formatter
Pretty-print, minify and validate JSON with clear error messages.
Coming soon
CSV → Excel (XLSX)
Export CSV straight to an Excel workbook.
Coming soon
JSON → SQL
Generate INSERT statements from a JSON array.
Coming soon
CSV Cleaner
Detect delimiters, trim whitespace and remove duplicate rows.
Why these tools are different
- Private by design. There's no upload step — your data is parsed and converted in the browser, so it never touches a server.
- Fast. Client-side conversion means results appear as you type, with no round-trip to a backend.
- Built for real data. Quoted fields, custom delimiters, embedded commas and newlines are all handled correctly.