CSV to JSON

Convert CSV to JSON with delimiter detection and header toggle.

CSV Input45 chars
JSON Output
JSON output appears here

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Frequently Asked Questions

What does "First row is header" control?▾

When checked, the first CSV row becomes the object keys and the output is an array of objects. Unchecked, every row becomes a plain array, producing an array of arrays instead.

Does it handle quoted fields with commas inside them?▾

Yes — quoted and escaped fields (e.g. "Smith, John") are parsed correctly per the CSV spec, via the papaparse library.

Are numbers converted automatically?▾

Yes — numeric-looking cells are converted to actual JSON numbers rather than staying as strings, so "30" becomes 30.

What delimiter does it expect?▾

Papaparse auto-detects the delimiter (comma, tab, semicolon, or pipe) from the input.

Is my CSV uploaded anywhere?▾

No — parsing happens entirely in your browser.