Case Converter
Change the capitalization of any text in one click. Paste your text, choose UPPERCASE, lowercase, Title Case or Sentence case, and copy the converted result.
Processed in your browser as you type. Your text is never uploaded or stored.
The Four Case Styles
- UPPERCASE turns every letter into a capital letter.
- lowercase turns every letter into a small letter.
- Title Case capitalizes the main words and keeps short words such as “a”, “of” and “the” lowercase unless they begin or end the title. Acronyms such as “NASA” are preserved.
- Sentence case lowercases the text and capitalizes the first letter of each sentence, as well as the word “I”.
Case Conversion Example
| Style | Result |
|---|---|
| Original | the quick guide TO unit conversion |
| UPPERCASE | THE QUICK GUIDE TO UNIT CONVERSION |
| lowercase | the quick guide to unit conversion |
| Title Case | The Quick Guide to Unit Conversion |
| Sentence case | The quick guide to unit conversion |
When Is a Case Converter Useful?
- Formatting headlines
- Fixing accidental Caps Lock
- Page titles and headings
- Cleaning data exports
- Slides and documents
- Email subject lines
Frequently Asked Questions
Title Case capitalizes most words, as in “The Guide to Better Writing”. Sentence case capitalizes only the first word and proper nouns, as in “The guide to better writing”.
Articles (a, an, the), short conjunctions (and, but, or) and short prepositions (of, in, on, to, by) stay lowercase unless they are the first or last word.
Yes, in Title Case — words already written in capitals are kept as they are, unless your whole text is in capitals.
No. Spacing, punctuation, numbers and line breaks are left exactly as they were.