Case Converter

1. 1Paste your text.
2. 2Click the case you want; the result appears immediately.
3. 3Keep clicking to try others — the original is preserved so nothing is lost.
4. 4Copy the result or download it.

The prose cases are straightforward, except title case. Proper title case does not capitalise every word: short articles, conjunctions and prepositions stay lowercase unless they are the first or last word. The tool follows that convention using a standard list of minor words, so you get 'The Rise and Fall of the House' rather than 'The Rise And Fall Of The House'.

The programming cases first split the input into words, handling spaces, hyphens, underscores and existing camelCase boundaries, then rejoin them in the target style. That means camelCase input converts cleanly to snake_case and back without losing word boundaries.

Sentence case capitalises after each sentence-ending punctuation mark and lowercases the rest, which is the fastest way to fix text that arrived in all capitals.

Your text is processed by JavaScript running in this page and is never sent over the network. That matters when you are pasting a draft, a client brief, meeting notes or anything else you would rather not hand to a server.

• Use sentence case to fix text that arrived in all capitals.
• Check names and brands after converting to sentence or lower case; they need their capitals put back.
• Use kebab-case for web addresses and CSS class names, and snake_case for many database columns.
• Title case rules differ between style guides; follow the one your publication uses.

• Title case rules: which words to capitalise in a headline
• How to fix text typed with caps lock on
• How to name files so they sort in the right order
• camelCase vs snake_case vs kebab-case: which naming style where