JSON Enum Generator – Generate JSON Enums Online
Generate JSON enums and allowed value lists for schema design and documentation. Our free JSON Enum Generator helps standardize field values across your API and data models.
The Challenge with Manual Enum Creation
You have a JSON object with fixed values that should be an enum in your code. Manually typing out each enum constant is slow and you might miss values when the API changes. Different languages have different enum syntax, making cross-platform development tedious.
Multiple Languages
TypeScript, Java, Python, C# support
Array Extraction
Create enums from JSON arrays
Naming Options
UPPER_CASE, PascalCase, camelCase
Easy Export
Copy or download generated code
About JSON Enum Generator
Enums define a fixed set of allowed values in your code. When your API returns specific string values that should be enums, manually writing them out for each language is tedious. This generator creates enum definitions in TypeScript, Java, Python, and JSON format from your value list.
How enum generation works
Add your enum values using the Add Value button or edit the existing ones. Set the enum name like Status or Role. Choose your target language from the Format dropdown. Click Generate and the tool outputs properly formatted enum code for your selected language.
Each language gets syntax-appropriate output. TypeScript gets an export enum with string values. Python gets an Enum class import. Java gets a full enum with constructor. JSON gets a simple object with name and values array for schema documentation.
When you'd use this
Your backend team defined status values and you need matching TypeScript enums in the frontend. Or you're writing API documentation and need to list allowed values in JSON format. This tool also helps when porting code between languages and need equivalent enum definitions.
This generator creates basic enums without advanced features. For TypeScript union types, const assertions, or Java annotations, you'll need to modify the output. The generated code is a starting point you can customize.
Questions
Which programming languages are supported?
TypeScript, Java, Python, and JSON format. Each produces idiomatic enum syntax for that language or ecosystem.
Can I generate enums from existing JSON?
Not directly, but you can extract the values from your JSON and paste them into the value fields. Future versions may support JSON array input.
How are value names formatted?
The enum keys use UPPERCASE by convention. The string values preserve your original casing. So "pending" becomes PENDING = "pending".
Can I add descriptions to enum values?
Not in this version. The generator creates simple enums. For documented enums, add comments manually after generation.
Is the output ready to copy into my project?
Yes, use the Copy button to grab the code or Download to save as a .ts, .py, .java, or .json file. You may need to adjust imports or namespaces.