JSON ↔ CSV converter
Turn a JSON array of objects into CSV — or parse CSV back into JSON with delimiter detection, header rows, and optional type inference.
Your data never leaves the browser — no upload, no server.
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About this tool
CSV is the spreadsheet interchange format; JSON is what APIs return. This converter bridges the two for quick data wrangling — flatten nested JSON with dot notation, stringify arrays, and parse CSV with proper quoting per RFC 4180.
European CSV files often use semicolons; TSV uses tabs. Auto-detect picks the most likely delimiter from the first line. Type inference turns true, false, null, and numeric strings into real JSON types.
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