CSV to JSON Converter

How it works

How to use the CSV to JSON

1. Paste or open CSV

   Paste your CSV, drop a file onto the editor, or load the sample.

2. Adjust the options

   Numbers and booleans are detected automatically, and the result is pretty-printed with your chosen indentation.

3. Copy or download the JSON

   The output updates as you type. Invalid input is highlighted with the exact line and column.

About CSV and JSON

CSV (comma-separated values) is the lingua franca of spreadsheets and data exports: one record per line, fields separated by commas, quoted when needed (RFC 4180).

JSON (JavaScript Object Notation) is the standard format for web APIs and configuration: objects, arrays, strings, numbers, booleans and null.

How the conversion works

Numbers and booleans are detected automatically, and the result is pretty-printed with your chosen indentation. Conversion happens entirely in your browser, so even sensitive data never leaves your device.

Built for developers

Why developers use it

• Private by design

  Runs 100% in your browser. Nothing you paste is uploaded, logged or stored on a server.

• Instant results

  Output updates as you type, with precise error locations when something is wrong.

• Works offline

  Once loaded, the tool keeps working without a connection. Install it as an app if you like.

• Free, no sign-up

  No accounts, no limits, no watermarks.

FAQ

Frequently asked questions

Keep going

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