高度なケース変換ツール
テキストをさまざまなケース形式に変換します。
結果...
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Converting Text Between Letter Cases
概要
Switching text between UPPERCASE, lowercase, Title Case, and other styles by hand is tedious and error-prone. This converter transforms your text into any case instantly, including sentence case, camelCase, and snake_case, entirely in your browser.
使い方（ステップ）
- 1
Paste your text
Enter the text you want to reformat.
- 2
Choose a case style
Pick uppercase, lowercase, title, sentence, camel, or snake case.
- 3
Copy the result
The converted text is ready to copy and use.
仕組み
The tool applies rules for each case style: uppercase and lowercase change every letter; title case capitalizes the first letter of each word; sentence case capitalizes only the first letter of each sentence; camelCase and snake_case reformat for code identifiers. You paste text, pick a style, and copy the result — no manual retyping.
こんなときに使う
Fixing text typed with caps lock on. Formatting headings into title case. Converting a label into camelCase or snake_case for code.
よくある質問
Title case capitalizes the first letter of every major word; sentence case capitalizes only the first word of each sentence.