Case Converter

Guide & FAQ

Converted text

Guide: Case Converter

Convert text case in one step

Type or paste your text into the box and every supported case style updates live. There is no button to press and no limit on length. Choose the style you need and tap Copy to put it on your clipboard.

The case styles

  • UPPERCASE and lowercase change every letter. Useful for fixing text typed with Caps Lock on.
  • Title Case capitalises each word. Tick the option to keep small words such as a, the and of in lowercase, which is the usual style for headlines.
  • Sentence case capitalises the first letter of each sentence and the word I.
  • camelCase and PascalCase remove spaces and capitalise each word, popular for variable and class names.
  • snake_case and CONSTANT_CASE join words with underscores, common in Python, SQL and environment variables.
  • kebab-case and dot.case join words with hyphens or dots, handy for URLs, file names and CSS classes.
  • aLtErNaTiNg and iNVERSE are playful styles for memes and chat messages.

Tips

For programming styles each line is converted separately, so you can paste a list of names and convert them all at once. Existing camelCase words are split correctly, so userProfileName becomes user_profile_name. Sentence case lowercases everything first, so proper nouns need a manual touch afterwards.

Private by design

All conversion happens in your browser. Nothing you type is uploaded by this tool, and it works on phones and desktops, in light and dark mode.

FAQ

How do I change text to uppercase or lowercase?

Paste your text in the box. The UPPERCASE and lowercase results appear instantly below it. Press Copy next to the one you want.

What is the difference between Title Case and Sentence case?

Title Case capitalises the first letter of every word, for headlines. Sentence case capitalises only the first word of each sentence, like normal writing. Tick the small words option to keep words like the, of and and in lowercase.

What are camelCase, snake_case and kebab-case used for?

They are naming styles for programming. camelCase is common in JavaScript variables, snake_case in Python and databases, and kebab-case in URLs and CSS class names.

Does it work with accents and other languages?

Yes. Letters with accents and non-English alphabets such as Cyrillic or Greek are converted using your browser's Unicode rules.

Is my text stored or uploaded?

No. The conversion runs in your browser as you type and nothing is sent anywhere by this tool.