Turn phrases into camelCase, PascalCase, snake_case or kebab-case
Processed in your browser. Nothing is uploaded. Updated on 24 Oct 2026.Turn a phrase or a column of field names into variable names. Paste "user profile image URL" and get userProfileImageUrl, UserProfileImageUrl, user_profile_image_url, user-profile-image-url and USER_PROFILE_IMAGE_URL together. Existing identifiers are split correctly too, so XMLHttpRequest becomes xml_http_request. Each line converts on its own, which suits a list of database columns or JSON keys.
Type or paste the words or variable names into the box; camelCase is highlighted.
Compare it with PascalCase, snake_case, kebab-case and CONSTANT_CASE in the list.
Press Copy next to the style your code needs.
Paste it into your editor.
This case converter rewrites your text in eleven cases at once: UPPER CASE, lower case, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, aLtErNaTiNg and iNVERSE. Type or paste once and every version updates as you type, each with its own Copy button.
The conversions follow clear rules. Title Case keeps a, an, the, of, in, on, and, or, but, for, to, at and by in lower case unless they start or end the title or follow a colon. Sentence case capitalises the first letter of each sentence and each line, and turns a lone "i" into "I". Both keep acronyms such as NASA and brands such as iPhone, unless the whole text is in capitals. The code cases convert each line separately and split existing identifiers, so XMLHttpRequest becomes xml_http_request.
Everything runs in your browser, so nothing you paste is sent anywhere. Press Ctrl+Enter to copy the highlighted case. To count the result, use the Word Counter; to clean a list first, use Remove Duplicate Lines.
The rest of the article, and all 6 questions about Case Converter, are on the Case Converter page.
Paste the text and copy the Sentence case version. It lowers every letter, then capitalises the first letter of each sentence and each line and turns a lone "i" into "I". Title Case is the other option if the text is a heading. Because the whole input is in capitals, acronyms cannot be told apart and are lowered too.
A, an, the, of, in, on, and, or, but, for, to, at and by stay lower case in the middle of a title. They are capitalised when they are the first or last word, or when they follow a colon or full stop, as in "Star Wars: A New Hope". Both parts of a hyphenated word are capitalised: "Well-Known".
camelCase joins words and capitalises every word except the first (firstName), as used for JavaScript variables. PascalCase capitalises every word (FirstName), as used for class names. snake_case joins lower-case words with underscores (first_name), common in Python and databases. kebab-case uses hyphens (first-name) for URLs and CSS. CONSTANT_CASE is snake case in capitals.
Yes. Paste one item per line. The code cases (camelCase, snake_case, kebab-case and so on) convert each line on its own, so a column of field names becomes a column of identifiers. Title Case and Sentence case also treat each line separately, which suits lists of headings.
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