How to use this tool
- Paste CSV with one unique, nonempty header name per column.
- Choose indentation and run Convert CSV to JSON.
- Review the result and diagnostics before copying or downloading.
Private by default
CSV to JSON Object Array Converter
Handle commas, line breaks, and doubled quotes inside quoted CSV cells without guessing types.
Your data stays in this browser
UTF-8Ln 1, Col 1
UTF-8—
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Your data stays in this browserInstantNo server round trips
PrivateBrowser-side processing
AuditableDocumented semantics
PortableCorrectly typed downloads
Category
CSV to JSON: How to use this tool
Convert header-based RFC 4180-style CSV to a JSON object array with every cell kept as a string.
Handle commas, line breaks, and doubled quotes inside quoted CSV cells without guessing types.
Open guide and examples
Example to try
Input CSV
name,role,note Ada,admin,"Line one, line two" Lin,editor,"He said ""hello"""
Result
[
{
"name": "Ada",
"role": "admin",
"note": "Line one, line two"
},
{
"name": "Lin",
"role": "editor",
"note": "He said \"hello\""
}
]Learn
Frequently asked questions
Is my data sent to a server?
No. The engine runs in your browser and applies local resource limits.
What happens with invalid input?
The tool reports a diagnostic and does not keep stale output.
What does CSV to JSON produce?
It emits one JSON object per data row and preserves cell text exactly after CSV decoding.
What limitation applies to CSV to JSON?
A header row is required; duplicate headers, uneven rows, and automatic number or date typing are rejected or avoided.