Paste list values
Enter one string value per line from a sheet, export, editor, or document.
JSON array converter
Convert a List to a JSON Array
Turn a copied spreadsheet column or plain-text list into valid JSON. Values are encoded safely with the browser's built-in JSON serializer.
No upload Free to use Works on mobile
Format tool
List to JSON Array
Options
Send to
JSON array
0 resultsTransfers use one-time session storage on this device; your result is never placed in the URL.
How to use List to JSON Array
Choose formatting
Use pretty JSON for readability or compact JSON when file size and one-line output matter.
Use valid JSON
Copy the encoded array into code, configuration, API payloads, or test fixtures.
Common uses
Development
Create string arrays for fixtures, scripts, and application configuration.
API payloads
Prepare a valid array of IDs, tags, names, or filters.
Data migration
Convert a text column into a portable structured format.
List to JSON Array FAQ
Will quotes inside values break the JSON? +
No. The tool uses JSON serialization, so quotes, backslashes, and other required characters are escaped correctly.
Does it create strings or numbers? +
Every non-empty line is encoded as a JSON string so identifiers with leading zeros are preserved.
Can I create compact JSON? +
Yes. Turn off pretty formatting to produce a single-line JSON array.
Keep working
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