CSV to JSON
Convert CSV data into JSON format.
This CSV to JSON converter turns CSV data — including a header row — into a JSON array of objects, one object per row keyed by the header names. Paste CSV text or upload a .csv file and the JSON result updates automatically; copy it or download it as a .json file. Conversion runs entirely in your browser.
How to use
- 1Paste CSV data, including a header row, into the input, or upload a .csv file.
- 2The JSON result updates automatically.
- 3Copy the result or download it as a .json file.
Frequently asked questions
How does this map CSV rows to JSON?
The first row is treated as column headers, and each subsequent row becomes one JSON object whose keys are those headers — the same shape you'd get from a typical spreadsheet export turned into API-style data.
What is converting CSV to JSON used for?
Turning a spreadsheet export into data a web app or API can consume directly, feeding CSV data into JavaScript code for testing, or reshaping tabular data for a JSON-based database or config format.
Does the input need a header row?
Yes — the first row is expected to contain column names, which become the keys in each resulting JSON object.
Is my CSV file uploaded to a server?
No. Conversion happens entirely in your browser, whether you paste text or upload a .csv file.