Convert between CSV and JSON online 12 uses
Convert CSV to JSON or JSON to CSV instantly in your browser, with full quoted-field support.
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- Runs entirely in your browser — your data is never sent to a server
- RFC 4180-compliant — handles quoted fields with commas and newlines
- Free, no account required
How it works
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1
Paste or enter the value you want to convert.
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2
Conversion happens instantly as you type.
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3
Review the result in the target format.
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4
Copy the result to your clipboard.
Why use this tool
Every dev utility, one place
Format, convert, encode, decode, and generate — no more juggling ten tabs.
100% private, always
Every tool runs in your browser — your code and data are never sent anywhere.
Works on any device
Runs on Windows, Mac, Linux, iOS, and Android — nothing to install.
Instant results
No queues, no build step — results update as you type.
Built to handle real data
Full Unicode support and RFC-compliant parsing, edge cases included.
Free, always
Free to use, with no rate limits, sign-up, or trial period.
Frequently asked questions
It aggressively assumes the very first line of the CSV contains the column headers to be used as object properties.
Yes, the parser follows strict RFC 4180 rules, correctly ignoring separators hidden within quoted fields.
It typically attempts to parse obvious digits into real integers or floats, while keeping everything else as text.
The resulting JSON object will either omit the key entirely or assign it an empty string value.
No, CSV requires flat data. Deeply nested JSON arrays will fail or require complex flattening first.
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