ケース変換

無料のケース変換ツール。UPPER、lower、Title、Sentence、camelCase、PascalCase、snake_case、kebab-case、CONSTANT_CASE間でテキストを変換します。

Runs in your browserUpdated Apr 26, 2026

upper

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lower

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title

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sentence

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camel

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pascal

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snake

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kebab

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constant

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よくある質問

›What case styles are supported?

lowercase, UPPERCASE, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE and more.

›What's the difference between camelCase and PascalCase?

Both join words with no separator. camelCase has a lowercase first letter (myVariable); PascalCase has an uppercase first letter (MyClass).

›Can I convert long pasted text?

Yes — works with any size text your browser can hold. All conversions run instantly.

›Is my text uploaded?

No — everything runs in your browser.

›Is the converter free?

Yes — fully free, no signup, no ads.