Letter Case Converter

Why Do You Need a Letter Case Converter

Case conversion is one of the most common text editing needs. Whether converting titles to uppercase, normalizing imported data to lowercase, capitalizing words or sentences, or fixing mixed-case pasted text, doing it manually is tedious. This tool offers 18 conversion modes in one click.

Core Features Explained

1. Case conversion: Uppercase, lowercase, toggle case, title case, sentence case.
2. Naming conversions: Spaces/underscores, camelCase/underscores, underscores/hyphens/dots/commas.
3. Line processing: Lowercase or uppercase the first letter of each line.
4. Character width: Convert full-width characters to half-width.

How to Use the Converter

1. Enter or paste text into the left input box.
2. Choose a conversion mode from the dropdown.
3. Click "Convert" to see the result.