CSV ↔ JSON Converter
Convert CSV to JSON arrays and back: auto delimiter detection, header handling, validation with clear errors. Local processing.
Runs entirely in your browser — no uploadsAbout this tool
CSV ↔ JSON converts tabular data between formats with automatic delimiter detection (comma, semicolon, tab, pipe), proper quoted-field handling and header row support.
JSON input must be an array of objects; malformed rows and JSON errors are reported precisely. Everything runs locally — safe even for confidential exports.
FAQ
Which delimiters are supported?
Comma, semicolon, tab and pipe — auto-detected from your data, or force one manually.
What JSON shape do you accept for JSON → CSV?
An array of flat objects. Nested structures are rejected with a clear message rather than mangled.
How are quotes handled?
RFC-4180 style: fields may be quoted and contain delimiters or escaped double quotes.