Skip to main content

CSV to JSON Converter

Your data never leaves your device

How to Use

  1. 1. Choose direction — Select CSV→JSON or JSON→CSV.
  2. 2. Add your data — Upload a file or paste text directly.
  3. 3. Set options — Pick JSON format and pretty-print preference.
  4. 4. Convert — Click Convert, then copy or download the result.

Frequently Asked Questions

Is my data safe?
Yes. All conversion happens in your browser. Your files never leave your device — no uploads, no servers, no tracking.
Can I convert JSON back to CSV?
Yes. Use the direction toggle to switch between CSV→JSON and JSON→CSV. Both directions are fully supported.
What JSON formats are supported?
Array of objects (each row becomes an object with column headers as keys) and array of arrays (raw 2D array including headers).
Can I paste text instead of uploading a file?
Yes. Switch to the "Paste Text" tab to paste CSV or JSON directly into the editor.