What are the benefits of TypeScript to JavaScript Converter?

Quickly preview the runtime-friendly JavaScript shape.. Share simplified code with JavaScript users more easily.. Everything runs locally in the browser without external upload..

Is TypeScript to JavaScript Converter free?

Yes, it is completely free to use, and no registration is required. Tool processing happens entirely in your browser, and your input content and uploaded files are not sent to a server. Our first-party improvement metrics use no cookies, visitor IDs, or session IDs and store only normalized page paths and daily counts for fixed event IDs.

TypeScript to JavaScript Converter

Dev

TypeScript→JavaScript変換

型注釈や interface を外して、確認用の JavaScript に素早く整形します。

TypeScriptコード

TypeScriptコードを入力またはペーストしてください。リアルタイムで変換されます。

JavaScript出力

変換済みのJavaScriptコード。「コピー」ボタンでクリップボードに保存できます。

About TypeScript to JavaScript Converter

Developers often want to see the rough JavaScript shape of TypeScript code before compilation. Common cases include preparing teaching material, sharing snippets with JavaScript-only teammates, or stripping noisy type syntax so the runtime logic is easier to inspect.

This TypeScript to JavaScript converter performs a lightweight browser-side transformation that removes type annotations, interfaces, type aliases, generic signatures, type-only imports and exports, and `as` assertions. It also handles decorator removal, `readonly` modifiers, and `as const` expressions for comprehensive type-to-plain-JavaScript conversion.

It is intentionally regex-based, so it is not a full TypeScript compiler replacement, but it is fast and practical for reviews, explanations, and rough conversions. Enums are rewritten into readable constant objects so the resulting output stays easy to scan.

All processing happens locally in your browser, making the tool appropriate for internal code samples and sensitive snippets that should not leave your machine.