The Case Converter rewrites the capitalization of any text you paste in, without changing the words themselves. Drop in a paragraph, a headline, a column of data, or a list of variable names and switch instantly between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case and kebab-case. It exists because retyping text by hand to fix capitalization is slow and error-prone, and because different contexts demand different conventions: a press headline wants Title Case, a database column wants snake_case, and a CSS class or URL slug wants kebab-case. One paste, one click, and the formatting is consistent throughout.
Reach for it whenever capitalization is wrong or inconsistent. Writers and marketers use it to clean up headlines, social posts and email subject lines, or to tame text that arrived in ALL CAPS. Developers use it to flip identifiers between the styles each language expects: JavaScript and Java favour camelCase, Python and SQL columns favour snake_case, and HTML class names and URLs favour kebab-case. Students and office workers use it to normalise notes, spreadsheets and document headings before publishing. Because it only touches letter case and word separators, the meaning of your content is never altered.
Each mode follows a defined rule rather than a guess. UPPERCASE and lowercase map every letter; Sentence case capitalises the first letter after each sentence-ending punctuation mark and lowercases the rest. Title Case capitalises the principal words while keeping short articles, conjunctions and prepositions lowercase (note that style guides differ: AP capitalises prepositions of four or more letters, while Chicago keeps almost all prepositions lowercase). The programming modes first split text into words, then rejoin them: camelCase removes spaces and capitalises every word except the first, snake_case joins lowercase words with underscores, and kebab-case joins lowercase words with hyphens.
Everything runs entirely in your browser using JavaScript string operations, so your text is never uploaded to a server, stored, or logged. That makes it safe for confidential drafts, internal data and unpublished copy. Because the transformation is rule-based and local, results are instant and identical every time, with no API limits or network delay. One accuracy caveat worth knowing: automatic Title Case cannot know your proper nouns, acronyms or brand-specific styling, so after converting a heading it is worth a quick scan to confirm names like iPhone or NASA read the way you intend.
