Free case converter — uppercase to lowercase, title case converter, sentence case converter, and convert text to uppercase in one click. Eight case modes including camelCase and snake_case.
A case converter changes text capitalization between formats — UPPER CASE, lower case, Title Case, Sentence case, aLtErNaTiNg CaSe, camelCase, snake_case, and kebab-case. This free case converter supports all 8 modes and updates the output instantly.
Paste your text, click "lower case." The entire text converts to lowercase instantly. Click Copy to copy the result.
Paste your text and click "Title Case." The tool capitalizes the first letter of every major word. Short words like a, an, the, and, but, or remain lowercase unless they are the first or last word.
A sentence case converter capitalizes only the first letter of each sentence and lowercases everything else — the standard format for body text, emails, and most writing.
Paste your text and click "UPPER CASE." Every letter converts to uppercase instantly.
Title case capitalizes the first letter of every major word: "The Quick Brown Fox." Sentence case capitalizes only the first word of each sentence: "The quick brown fox." Title case is for headlines; sentence case is for body text.
Completely free with no signup, no usage limits, and no data sent to a server.
This free case converter handles all eight standard text case formats in one tool. Writers use the title case converter to format article headlines correctly. Developers use snake_case and camelCase conversion to reformat variable names and function identifiers without manual retyping. Students use the sentence case converter to fix automatically capitalized text pasted from documents. Marketers use uppercase to lowercase conversion to strip all-caps legacy data before importing it into a CMS. All conversions run instantly in your browser — paste text, click a mode, copy the result.
The most common case converter questions involve title case vs. sentence case. Title case capitalizes every major word — used for headlines, book titles, film titles, and H1–H3 headings. Sentence case capitalizes only the first word of each sentence — used for body text, meta descriptions, UI labels, and most standard writing. This case converter follows AP style for title case: short prepositions (in, on, at, by, for), conjunctions (and, but, or), and articles (a, an, the) stay lowercase unless they open or close the title. After converting case, run the grammar checker or word counter on the result.