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How to change data type in JSON?

Changing data types in JSON involves modifying the value representation. JSON supports six data types: strings (in double quotes), numbers (no quotes), booleans (true/false), null, objects (in {}), and arrays (in []). To change a string to a number, remove the quotes: change "123" to 123. To convert a number to a string, add double quotes: 123 becomes "123". For boolean conversion, replace string values with literal true or false without quotes. Use our JSON Editor at jsonconsole.com/json-editor to safely change data types with real-time validation ensuring the changes are valid. The editor immediately highlights type errors if the change breaks validation rules. When working programmatically, parse the JSON, modify the value with proper type casting, then serialize back. Remember that changing data types affects how the data is processed in your application, so ensure the new type matches expected formats.
Last updated: December 23, 2025

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