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Paste a JSON sample in the input box, click Generate, then copy the TypeScript interfaces from the output box. Nothing leaves your browser.

Input: bytes

Output: bytes

JSON to TypeScript Interface Generator

Last reviewed: 2026-07-20

Convert a JSON input into a TYPESCRIPT output - one step, in the browser.

Typical use: when your downstream platform accepts TYPESCRIPT but not JSON.

Output sizing and quality are controlled by the option fields above the file picker; defaults match the most common downstream use.

Last updated: Jul 20, 2026

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Frequently Asked Questions

What does JSON to TypeScript Interface Generator do?

Convert a JSON input into a TYPESCRIPT output - one step, in the browser.

When should I reach for json to typescript interface generator?

Typical use: when your downstream platform accepts TYPESCRIPT but not JSON.

What complementary tools work well alongside json to typescript interface generator?

If you need the reverse direction, look at the related-tools section for the TYPESCRIPT-to-JSON converter.