Case Converter
Convert text to uppercase, lowercase, title case, and more
When does text case actually matter?
Text case affects both readability and, in some contexts, functionality — code that expects lowercase identifiers, headlines that follow a house style guide, or copy pasted from a source that used inconsistent capitalization all need to be normalized before publishing.
Title Case and Sentence case follow different conventions: Title Case capitalizes most words (skipping short articles and prepositions like "a," "the," "of"), which is common for headlines, while Sentence case only capitalizes the first word and proper nouns, which is more common for body copy and is generally considered easier to read.
This tool converts text between six common formats instantly, entirely in the browser — nothing you type is sent anywhere.
Frequently asked questions
- What's the difference between Title Case and Capitalize Each Word?
- Title Case follows standard style-guide rules and leaves short connector words (a, the, of, and) lowercase unless they start the sentence. Capitalize Each Word capitalizes literally every word, with no exceptions.
- Is my text sent to a server when I use this tool?
- No — the conversion runs entirely in your browser using JavaScript; nothing you type is transmitted anywhere.
- What is aLtErNaTiNg CaSe used for?
- Mostly stylistic or informal use (sometimes called "sarcasm case" online) rather than a professional writing convention — included as a fun/utility option, not a style-guide standard.
- Which case should I use for headlines?
- It depends on your house style — many publications use Title Case for headlines and Sentence case for body text and subheadings, but there's no universal rule.
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