Case Converter

Convert text between uppercase, lowercase, title case, sentence case, capitalized case, alternating case, inverse case, and slug case.

Your Text

Paste or type text, then choose a case format.

Convert To

Your converted text will appear here

Start typing or paste text on the left, then select a case format.

Reference

Common Text Case Formats

Useful context for choosing the right case conversion

Headings
Title Case

Title case capitalizes important words and keeps short connector words lowercase, making it useful for page titles, article headlines, and labels.

Readable Text
Sentence Case

Sentence case lowercases most text, then capitalizes the first letter after sentence-ending punctuation. It works well for paragraphs and descriptions.

URLs
Slug Case

Slug case converts text to lowercase words separated by hyphens, which is useful for readable URLs, filenames, CSS classes, and simple identifiers.

Bulk Cleanup
Uppercase & Lowercase

Uppercase and lowercase conversions are useful when cleaning pasted data, standardizing labels, formatting spreadsheet values, or normalizing imports.

All conversion happens in your browser. Your text is never sent to any server - it stays completely private on your device.

FAQ

Common Questions

Which case formats are supported?
The tool supports uppercase, lowercase, title case, sentence case, capitalized case, alternating case, inverse case, and slug case.
What is title case best for?
Title case is useful for headings, article titles, page titles, and labels where each important word should start with a capital letter.
What is sentence case best for?
Sentence case is useful for paragraphs, descriptions, notes, and interface copy because it keeps text readable without capitalizing every word.
What does slug case do?
Slug case lowercases text, removes unsupported symbols, and joins words with hyphens. It is useful for URLs, filenames, tags, and identifiers.
Does the tool store or transmit my text?
No. All conversion runs entirely in your browser using JavaScript. Nothing is sent to any server. You can verify this by disconnecting from the internet - the tool will continue to work.
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