Convert CSV to JSON
CSV is the universal export format for spreadsheets and databases, but most APIs and JavaScript apps expect JSON. Converting CSV to JSON turns each row into an object, using the header row as keys — so you get a clean, ready-to-use array you can paste straight into code, a config file or an API request.
Free · No upload · Runs in your browser
Paste or upload your CSV; the first row becomes the JSON keys.
Delimiter
CSV InputHeader row on
JSON Output
[
{
"name": "toolko, inc",
"role": "builder",
"free": "true"
},
{
"name": "say \"hi\"",
"role": "greeter",
"free": "false"
}
]Why convert CSV to JSON?
- Feed spreadsheet exports into APIs and JavaScript apps that need JSON.
- Header row becomes object keys automatically — no manual mapping.
- Handles comma, semicolon and tab-separated files.
- Runs locally, so sensitive data never leaves your browser.
How to convert CSV to JSON
- 1Paste your CSV (or upload it) into the converter below.
- 2The first row is treated as the column headers / JSON keys.
- 3The tool detects the delimiter and outputs a JSON array of objects.
- 4Copy the JSON and drop it into your code or config.
Frequently asked questions
What does the CSV header row become?+
Each column header becomes a key on every object, and each subsequent row becomes one object in a JSON array.
Which delimiters are supported?+
Comma, semicolon and tab. The converter detects the separator so European-style semicolon CSVs work too.
Is my data uploaded anywhere?+
No — the conversion runs entirely in your browser, so your data stays private.
Related conversions
Need more than CSV → JSON?
The full CSV to JSON handles batches, resizing and more — all free and in your browser.