Case Converter

Convert text to upper case, lower case, title case, sentence case, camelCase, snake_case or kebab-case in one click.

Paste or type your text, then choose a case style. The converted text appears below, ready to copy.

Title Case keeps short words such as "and", "of" and "the" in lower case unless they are the first or last word. Style guides differ, so check the one you need to follow.

Rate this tool

Was this tool useful? Tap a star to rate it.

This Case Converter changes the letter case of any text. Use it to fix text typed with caps lock on, tidy headings, or turn a phrase into a format used in writing and programming.

How to use the Case Converter

  1. Paste or type your text in the first box.
  2. Select a case style button.
  3. Read the converted text in the second box.
  4. Select Copy result to copy it, or Clear to start again.

Case styles explained

  • UPPER CASE: every letter is capitalised.
  • lower case: every letter is small.
  • Title Case: the main words start with a capital letter. Short words such as “and”, “of” and “the” stay lower case unless they come first or last.
  • Sentence case: only the first letter of each sentence is capitalised.
  • camelCase: words are joined with no spaces, and every word after the first starts with a capital letter, for example “myVariableName”.
  • snake_case: words are lower case and joined with underscores.
  • kebab-case: words are lower case and joined with hyphens, often used in web addresses.

Worked example

The text “the quick brown fox jumps over THE lazy dog” becomes “The Quick Brown Fox Jumps Over the Lazy Dog” in Title Case, “The quick brown fox jumps over the lazy dog” in Sentence case, and “the-quick-brown-fox-jumps-over-the-lazy-dog” in kebab-case.

For writing tips on capitalisation, read our guide Text Case Styles Explained.

Limits to know about

Title Case follows a common simple rule, but style guides differ on which small words to leave in lower case. Names, brands and acronyms such as “iPhone” or “NASA” may need a manual fix after conversion. The tool runs in your browser, so your text is not sent to our servers.

Frequently asked questions

Is my text stored anywhere?

No. The conversion happens in your browser and the text is not uploaded.

Does it work with languages other than English?

It handles letters from many languages, but languages without upper and lower case, such as Hindi, are left unchanged.

Why does Sentence case leave some names in lower case?

The tool converts everything to lower case first, then capitalises the start of each sentence. Proper names in the middle of a sentence need a manual fix.