Tools / CSV ↔ JSON Converter
CSV ↔ JSON Converter
Convert CSV to JSON or JSON to CSV in your browser. Supports quoted fields and comma, semicolon or tab delimiters.
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Frequently asked questions
Is my data uploaded to a server?
No. Conversion runs entirely in your browser. Nothing is sent or stored on a server.
How does Auto delimiter work?
Auto inspects the first non-empty line and picks comma, semicolon or tab based on which separator appears most often outside quoted fields.
What JSON shape is supported for JSON → CSV?
Provide a JSON array of objects. Keys become CSV headers in first-seen order. Missing values become empty cells.
What are the size limits?
Input is capped at 200,000 characters and 10,000 rows so large pastes stay responsive.
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