What each case style is for
UPPERCASE is used for emphasis, warning labels, or acronyms — but in body text it reads as shouting, so it's best kept to short headings or single words.
lowercase strips all capitalization. It's useful for cleaning up text pasted from somewhere with inconsistent formatting, or for a deliberately casual, understated style some brands and social accounts use.
Title Case capitalizes the main words in a heading while keeping small words like "a", "the", and "of" lowercase — the style you'll see on book covers, movie titles, and article headlines.
Sentence case capitalizes only the first letter of each sentence, the way normal prose is written. It's the style most word processors default to and the one most readers expect in body paragraphs.
Capitalized Case (also called Proper Case) capitalizes the first letter of every single word, no exceptions — often used for names, product titles, or menu labels.
aLtErNaTiNg cAsE and InVeRsE CaSe are stylistic, mostly used for memes, sarcasm text ("mocking spongebob" style), or to make a short phrase visually stand out.
Common uses for a case converter
- Fixing Caps Lock mistakes — if you typed a whole paragraph with Caps Lock on by accident, paste it in and convert to Sentence case instead of retyping.
- Formatting headlines — writers and editors use Title Case to keep headings consistent across an article or document.
- Cleaning up pasted text — content copied from PDFs or old documents often has inconsistent capitalization that's faster to fix with a converter than by hand.
- Social media and captions — quickly switch between a bold all-caps hook and normal sentence case for the rest of a caption.
Frequently asked questions
Does Title Case capitalize every word?
No — Title Case capitalizes the main words but keeps short articles, conjunctions, and prepositions (like "a", "and", "in", "of") lowercase, unless they're the first or last word of the title. If you want every single word capitalized regardless, use Capitalized Case instead.
Is my text saved or uploaded anywhere?
No. The conversion happens entirely in your browser using JavaScript — your text is never sent to a server or stored. See our Privacy Policy for details.
Can I convert a whole document, not just a sentence?
Yes — paste in as much text as you like, including multiple paragraphs. The converter processes the entire text at once.
What's the difference between Sentence case and Capitalized Case?
Sentence case capitalizes only the first letter of each sentence, like normal writing. Capitalized Case capitalizes the first letter of every word, which is better suited to titles and headings than to paragraphs.
Need a word or character count too? Try the free word counter on WordlyCounter.