How to Use the CSV to JSON Converter
The CSV to JSON Converter switches between spreadsheet-style CSV data and the JSON format widely used in software development. Choose "CSV → JSON" and the first line of your input is treated as column headers, with every line after that read as data, producing a JSON array of objects. Choose "JSON → CSV" and enter a JSON array of objects ([{...}, {...}]); the keys of the first object become the CSV headers used to build the table.
It's handy for turning CSV exported from a spreadsheet into JSON for testing an API, or cleaning up a JSON API response into a CSV you can open in a spreadsheet. CSV values that contain commas may not split correctly, so this tool works best on simple, comma-free table data. Conversion happens instantly in your browser, and the data you enter is never sent to a server, so even sensitive data can be converted safely.
Frequently Asked Questions
Values containing commas may not be split correctly. This tool works best with simple, comma-free table data.
It must be a JSON array of objects ([{...}, {...}]); the keys of the first object become the CSV headers.
Yes. When converting CSV to JSON, the first line of the input is treated as column headers, and every line after that is treated as data.