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大文字・小文字変換

大文字・小文字や命名形式を変換します。

大文字・小文字変換

UtilBrix が提供

入力内容はブラウザ内で処理されます。アカウントは不要です。 Character counts use Unicode code points. Reading: 200 words/minute. Speaking: 130 words/minute.

詳しい方法と使用例は英語で提供しています。

Step-by-step instructions (English)

  1. Paste the text you want to transform.
  2. Choose a prose case or naming style such as camelCase, snake_case, or kebab-case.
  3. Run the conversion and review abbreviations and proper names before copying.

計算式と方法

Upper and lower case use locale-aware conversion. Title case capitalizes word starts. Code-style modes split words and join them with camel, Pascal, underscore, or hyphen conventions. Scripts without letter case remain unchanged.

使用例

Hello world becomes helloWorld in camelCase, HelloWorld in PascalCase, and hello_world in snake_case.

When this tool is useful

Normalize a heading, prepare a code identifier from a phrase, or convert a list of names to a consistent naming convention. The appropriate mode depends on whether spaces and punctuation should remain part of the output.

Common mistakes and limitations

  • Title case is a mechanical capitalization rule, not a full editorial style guide.
  • Code-style modes tokenize text and can remove punctuation; retain the original if punctuation is meaningful.

Practical questions about this tool (English)

Will the tool preserve acronyms automatically?

No. Mechanical case conversion can change API to Api or api depending on the mode. Review acronyms, product names, and other intentional capitalization.

Why does some text remain unchanged?

Some writing systems do not have upper- and lowercase letter forms. Case operations cannot create distinctions that do not exist in the script.

関連ツール

UtilBrixをインストール

ホーム画面からツールをすぐに開けます。

  1. ブラウザのメニュー(⋮)を開きます。
  2. 「アプリをインストール」または「ホーム画面に追加」を選びます。
  3. 確認してUtilBrixをホーム画面に追加します。

項目がない場合はAndroid版Chromeで開いてください。

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