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CSV and JSON converter

Move tabular data between applications. Simple, private, right in your browser.

Pick up where you left offMy workspace →

Save the inputs and settings you choose. Nothing is uploaded until you select Save.

Save a file to your 5 MB cloud space

Choose a file explicitly. Your tool’s open files are never uploaded automatically. PDF, PNG, JPEG, WebP, TXT, CSV and JSON are supported.

Preparing your workspace…

A LITTLE GUIDANCE

How to use this tool

  1. Choose CSV to JSON or JSON to CSV.
  2. Select the delimiter and paste or open your data.
  3. Review type conversion or spreadsheet protection before exporting.

A worked example

CSV with a name containing a comma and an ID 00123 round-trips with both string values intact.

What to know

CSV needs unique headers and a consistent field count. JSON input must be an array of flat objects. CSV values stay strings by default; optional conversion recognizes plain numbers, booleans and null. Leading-zero identifiers stay strings. Large JSON numbers must be quoted.

Supported inputs and limits

CSV: 2,000,000 characters, 10,000 rows, 50 columns. JSON: 1,000,000 characters.

Where is my data processed?

In your browser. Cloud saving is optional: only the supported inputs, settings or files you explicitly choose are uploaded. Download or save anything you want to keep before closing the page. Read our privacy details.

Further reading

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