CSV to JSON
Turn CSV rows into a JSON array of objects with header detection.
Convert CSV to a JSON Array
The CSV to JSON converter reads comma-separated rows and produces a JSON array of objects, using the first row as field names. It is the fastest way to move spreadsheet exports, database dumps, or log files into a structure your code can consume — no manual reshaping required.
How it works
Parsing runs locally in your browser. Paste your CSV and the tool detects the header row, splits each remaining line into fields, and pairs them with the column names to build objects — all on your device, with no upload. Quoted fields that contain commas or line breaks are parsed correctly, and the results appear instantly.
How to use it
- Turn a spreadsheet export into JSON for an API or import script.
- Convert CSV logs into objects you can filter in code.
- Seed test fixtures from tabular data.
- Prototype quickly with data a colleague sent as CSV.
Need to go back to a spreadsheet? JSON to CSV reverses the conversion. Tidy up the output with the JSON Formatter, or turn the same table into docs with CSV to Markdown Table.
Private by design
Because the CSV is parsed in your browser, nothing you paste is uploaded or logged. Your data stays private, with no sign-up needed.
Frequently asked questions
Yes. The first row is treated as field names and used as the keys for each JSON object.
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JSON Validator
Validate JSON syntax and jump straight to the line and column of any error.
JSON to CSV
Convert a JSON array of objects into clean CSV, ready for Excel or Sheets.