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Text case converter

Change letter case without rewriting. Choose a format and copy the result.

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Choose the right format

For Hello world. good morning!, uppercase produces HELLO WORLD. GOOD MORNING! and lowercase produces hello world. good morning!. Sentence case looks for sentence beginnings; capitalizing words changes the first letter of every word.

Review before copying

The converter does not recognize proper names, abbreviations or title style rules. Check names such as London and abbreviations such as AI. Lowercase can change an abbreviation you intended to preserve; keep a copy of the original before trying formats.

Use it for messages, notes and drafts. Avoid changing addresses, passwords or code where letter case matters. After conversion, use the word counter to check length.