Paste list values
Enter one string value per line from a sheet, export, editor, or document.
JSON array converter
List to JSON Array Converter
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
JSON array
0 resultsHow 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
Related list tools
Format
New Line to Comma Separator
Convert a column or newline-separated list into comma-separated values. Add quotes, choose a custom delimiter, and copy the result online.
Format
Add Prefix and Suffix
Add text before or after every line in a list. Wrap values in quotes, build URLs, format SQL values, and edit columns in bulk online.
Format
List Case Converter
Change every line in a list to uppercase, lowercase, title case, or sentence case. Format keywords, labels, names, and copied columns online.
Clean
Remove Duplicate Lines
Remove duplicate lines from a list while preserving the original order. Ignore case, trim whitespace, and clean empty lines instantly in your browser.