Case Converter: Upper, Lower, Title, camelCase
Paste any text and switch it to UPPER CASE, lower case, Title Case or Sentence case, or to camelCase, snake_case and kebab-case for variable names and file names.
Cases at a glance
- UPPER CASE
LEARN THE BASICS OF HTMLShort labels, warnings, acronyms.- lower case
learn the basics of htmlTags, hashtags, email addresses.- Title Case
Learn the Basics of HTMLBook, blog and video titles.- Sentence case
Learn the basics of HTMLWebsite headings, buttons, menus.
- camelCase
userFirstNameJavaScript and Java variables and functions.- PascalCase
UserFirstNameClasses, React components, C# methods.- snake_case
user_first_namePython names, SQL tables and columns.- kebab-case
user-first-nameCSS classes, URLs, file names.- CONSTANT_CASE
USER_FIRST_NAMEConstants and environment variables.
How to use the case converter
- Type or paste your text into the Your text box.
- Press a case: UPPER CASE, lower case, Title Case or Sentence case for writing, or camelCase, PascalCase, snake_case, kebab-case or CONSTANT_CASE for code. The result updates as you type.
- For code cases, put one name per line to convert a whole list at once. Leave Keep acronyms on so words like HTML and API stay in capitals in titles and sentences.
- Press Copy to copy the result, or Use as input to keep converting it.
Everything runs in your browser. Nothing you paste or type is uploaded or saved.
Frequently asked questions
What is the difference between Title Case and Sentence case?
Title Case capitalises the main words, as in "The Lord of the Rings": short words such as a, and, of, the and to stay lower case unless they come first or last. Sentence case capitalises only the first word of each sentence, plus the word "I", as in "The lord of the rings". Most style guides use Title Case for book and article titles and Sentence case for headings on websites and in apps.
When should I use camelCase, snake_case or kebab-case?
Follow the language you are writing. JavaScript and Java use camelCase for variables and functions (userName) and PascalCase for classes and React components (UserCard). Python and SQL column names use snake_case (user_name), and CONSTANT_CASE is for constants (MAX_USERS). kebab-case (user-name) is for CSS classes, HTML attributes, URLs and file names.
Is my text saved or sent anywhere?
No. The conversion runs in JavaScript in your browser, so your text never leaves your device and nothing is stored. You can use the tool offline once the page has loaded.