Developer tools

JSON to TypeScript Interface

Generate TypeScript interfaces from a JSON object or array. Nothing you enter leaves your browser.

Paste JSON

Result

Your result will appear here.

Simple by design

Get the answer, without the clutter.

FormatCalc is built for quick work. This json to typescript interface runs entirely on your device, so private text and data stay private.

01

Enter or paste your information.

02

Transform it with one click.

03

Copy, use, or download your result.

Common questions

Using the JSON to TypeScript Interface

Is the JSON to TypeScript Interface free to use?

Yes. FormatCalc's JSON to TypeScript Interface is free to use with no account required.

Is my data private when I use the JSON to TypeScript Interface?

Yes. This tool processes your input locally in your browser. FormatCalc does not upload or store what you enter.

How do I use the JSON to TypeScript Interface?

Paste or type your input, select any available options, and choose Generate TypeScript. You can then copy the result.