About this tool
Convert CSV data to JSON arrays. Useful when reviewing API responses, cleaning config before commit, or sharing readable snippets in docs and PRs.
Paste CSV with a header row into Input. Click Convert to build a JSON array of row objects. Example — Turn a two-column CSV into JSON: try `sku,qty,price A-100,3,9.5 B-200,1,24` and expect something like `[ { "sku": "A-100", "qty": "3", "price": "9.5" }, { "sku": "B-200", "qty": "1", "price": "24" } ]`. Numeric-looking cells stay strings unless you coerce them in code.
All cell values are strings after parse — cast numbers/booleans in your app. See also: JSON to CSV, and JSON Formatter. Runs in your browser — nothing you paste gets uploaded.
How to use
- Paste CSV with a header row into Input.
- Click Convert to build a JSON array of row objects.
- Copy the JSON for fixtures, mocks, or API payloads.
- Ensure the first line is headers — rows without headers become awkward key names.
Example
Turn a two-column CSV into JSON
Input
sku,qty,price A-100,3,9.5 B-200,1,24
Output
[
{
"sku": "A-100",
"qty": "3",
"price": "9.5"
},
{
"sku": "B-200",
"qty": "1",
"price": "24"
}
]Numeric-looking cells stay strings unless you coerce them in code.
Limitations
- All cell values are strings after parse — cast numbers/booleans in your app.
- Multi-line quoted fields and unusual encodings can still trip the parser.
- There is no schema mapping UI; column names come straight from the CSV header.
Related guides
1Related tools
2Frequently asked questions
What does the CSV to JSON do?
Convert CSV data to JSON arrays. Runs in your browser — no install, no account.
How do I use the CSV to JSON?
Paste CSV with a header row into Input. Click Convert to build a JSON array of row objects. Copy the JSON for fixtures, mocks, or API payloads. Ensure the first line is headers — rows without headers become awkward key names.
Is the CSV to JSON free?
Yes. No signup, no usage limits, no paywall.
Does the CSV to JSON upload my data?
No. Processing happens locally in JavaScript. Your input is not uploaded, stored, or logged.
What are the limitations of the CSV to JSON?
All cell values are strings after parse — cast numbers/booleans in your app. Multi-line quoted fields and unusual encodings can still trip the parser. There is no schema mapping UI; column names come straight from the CSV header.