Data Converters

JSON to TypeScript Online

Use JSON to TypeScript to infer TypeScript interfaces from JSON. The conversion runs in your browser and produces TypeScript interface definitions without uploading your data.

Infers interfaces from shape Browser-only Zero dependencies
JSON TypeScript
Paste JSON below, or drop a file
Options

Converted entirely in your browser — your data never leaves your device

How to use it

  1. 1 Paste your source data into the input panel or load a local text file when available.
  2. 2 Adjust any visible conversion settings, such as a table name or interface name.
  3. 3 Run the converter in your browser.
  4. 4 Review the output, then copy or download the result.

Use cases

  • Move small datasets between developer-friendly formats
  • Prepare examples for docs, tests, migrations, or config files
  • Inspect structured data without opening a spreadsheet or editor extension

Limitations

  • The generator infers common primitive, array, and nested object shapes.
  • Very large files depend on browser memory and device performance.
  • Malformed or highly specialized data may need manual cleanup before or after conversion.

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FAQ

Does JSON to TypeScript upload my data?

Your file or text is processed in your browser and is not uploaded.

What does JSON to TypeScript output?

It outputs TypeScript interface definitions. The generator infers common primitive, array, and nested object shapes.

Should I review the result before using it?

Yes. Data formats vary, so always review generated output before using it in production, database, or publishing workflows.