Convert text between upper, lower, title and sentence case
Fix ALL CAPS paragraphs or format a headline in a couple of clicks.
Accepted input
Any plain text. Letters from many alphabets are handled with the browser’s Unicode support, but case rules are written for English-style capitalisation. Scripts without upper and lower case, such as Arabic or Chinese, pass through unchanged.
How to use this tool
- Paste text into the first box.
- Press one of the five buttons. The converted text appears in the Result box.
- Press Copy result, or edit and convert again.
What each option does
| Option | Rule |
|---|---|
| UPPERCASE / lowercase | Changes every letter. |
| Title Case | Capitalises words except short joining words (a, an, the, and, but, or, for, nor, on, at, to, by, in, of, up, as), but always the first and last word. |
| Sentence case | Lowercases everything, then capitalises the first letter of the text and of each sentence. |
| Capitalize Each Word | Capitalises every word, including small ones, and words after hyphens. |
Examples
Title Case: “the lord of the rings” becomes “The Lord of the Rings”.
Sentence case: “hELLO world. this is TEXT” becomes “Hello world. This is text”.
Capitalize Each Word: “the lord of the rings” becomes “The Lord Of The Rings”.
Limits you should know
Title-case rules differ between style guides, languages and applications, so check the result against the style you must follow. Lowercasing and sentence case cannot know that “iPhone”, “NASA” or a person’s name should keep its capitals, and the lone word “I” is not restored. Some letters change length in uppercase (German ß becomes SS). Proofread before you publish.
Privacy
Text you type or paste is handled by JavaScript in your browser and is not sent anywhere by the tool code. The page is served by a web server that keeps ordinary access logs; see the Privacy Policy.
Examples with exact results
| Input | Option | Result |
|---|---|---|
| war and peace: a NOVEL | UPPERCASE | WAR AND PEACE: A NOVEL |
| war and peace: a NOVEL | Sentence case | War and peace: a novel |
| war and peace: a NOVEL | Title Case | War and Peace: a Novel |
| war and peace: a NOVEL | Capitalize Each Word | War And Peace: A Novel |
| the cat sat. it was happy! really? yes | Sentence case | The cat sat. It was happy! Really? Yes |
| éclair au chocolat | Title Case | Éclair Au Chocolat |
| straße | UPPERCASE | STRASSE |
What the examples show
- Small words after a colon. The Title Case option leaves “a” lowercase after the colon in the first example. Some style guides capitalise the first word after a colon, so you may need to fix such words by hand.
- French and other languages. The Title Case option follows English joining words, so it capitalised “Au” in the French example, where French rules would keep it lowercase. Use it only as a starting draft for other languages.
- Uppercase can change length. The German letter ß becomes SS, so the result has one more character than the input.
Good ways to use it
- Fix text typed with caps lock by choosing Sentence case, then restore names and acronyms.
- Prepare headings by choosing Title Case and then comparing them against the style guide you follow.
- Standardise lists, such as product names or tags, by using lowercase before comparing or sorting.
Limits
- Names, brand spellings and acronyms such as iPhone, NASA or McDonald’s are not recognised and will need manual correction.
- The word “I” on its own is not restored to a capital in Sentence case.
- Words after hyphens are only capitalised by the “Capitalize Each Word” option. Title Case treats a hyphenated word as one word.
- The original text in the first box is never changed. The result appears in a separate box.
Troubleshooting
| What you see | Likely reason | What to try |
|---|---|---|
| Result box is empty | No option was pressed after typing | Press one of the five option buttons |
| Acronyms became lowercase | Lowercase and sentence case do not know acronyms | Retype them in capitals |
| Copy button did nothing | The browser blocked clipboard access | Select the result and copy it manually |
More advice on keeping names and acronyms correct is in how to convert uppercase text to lowercase.
Frequently asked questions
Which title-case rule is used?
A common English rule: small joining words stay lowercase except at the start and end. Other style guides differ.
Does it change my original text?
No. The result appears in a separate box.
Does it work in other languages?
Alphabets with letter case work, but language-specific rules are not applied.