CSV to JSON converter
Convert spreadsheet exports into JSON for code, APIs and databases.
Free No sign-up Runs in your browser
How it works
How to use the CSV to JSON tool
- 1
Paste or open CSV
Comma, semicolon or tab separated.
- 2
Choose options
Header row and type detection.
- 3
Copy or download
Get pretty-printed JSON instantly.
Correct CSV parsing
Quoted values containing commas, escaped quotes and line breaks are parsed according to RFC 4180. Duplicate column names get a suffix so no data is lost.
Limitations
We’d rather be upfront about what this tool can’t do yet:
- Dates stay as text exactly as written.
FAQ
Frequently asked questions
Is my data sent anywhere?
No. All processing happens locally in your browser. Nothing you enter is uploaded, stored or logged.
Why did 0123 become 123?
Number detection removes leading zeros. Turn off “Detect numbers & booleans” to keep everything as text.
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