Text Case Converter

Convert pasted text into writing cases, title case and developer-friendly identifiers locally in your browser.

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Local text conversion

The converter uses browser JavaScript only. Pasted drafts, snippets and identifiers are not uploaded.

Writing and titles

Switch quickly between lowercase, uppercase, sentence case, capitalized words and common title case.

Developer identifiers

Turn pasted labels into kebab-case, snake_case, camelCase or PascalCase without sending source text anywhere.

関連テキストツール

ワードカウンター
単語と文字をカウント
テキスト差分チェッカー
テキストバージョンの比較
URLエンコーダー＆デコーダー
テキストのエンコードとデコード
Markdown to HTML
Convert Markdown locally

Frequently asked questions

Is my pasted text uploaded?

No. Case conversion runs in your browser with local JavaScript. The text you paste is not sent to Convertr servers.

Does title case follow a specific style guide?

The title case mode uses a modest common-English small-word rule. It is useful for quick titles, but it is not a full AP or Chicago style editor.

How do identifier cases handle punctuation?

Snake, kebab, camel and Pascal case modes extract Unicode letters and numbers as words, then join them for the selected format. Extra punctuation is removed.