Case Converter

All four are conventions for combining words without spaces, used in programming, URLs, and file names. camelCase: first word lowercase, subsequent words capitalized (e.g. myVariableName). PascalCase: every word capitalized, no spaces (e.g. MyVariableName, also called UpperCamelCase). snake_case: lowercase with underscores (e.g. my_variable_name). kebab-case: lowercase with hyphens (e.g. my-variable-name), the standard for URL slugs and CSS class names. Pick the one your team / framework requires; all four are equally readable, the choice is purely stylistic.

Title Case capitalizes the first letter of every major word (nouns, verbs, adjectives, adverbs) and lowercases short articles, conjunctions, and prepositions (a, an, the, and, but, or, for, in, of, on, to, with). The standard reference is the Chicago Manual of Style, but AP Style is more aggressive about capitalizing prepositions. Title Case is the conventional capitalization for English-language book titles, blog post titles, and headlines in most style guides. Our converter uses a Chicago-style stop-word list and capitalizes the first word regardless.

Sentence case capitalizes only the first letter of each sentence, leaving the rest lowercase. The exception is proper nouns (names, places, brands) which keep their normal capitalization. Sentence case is the default in most body copy, email, and chat, and is also Google's preferred meta description style per their structured data documentation.

Toggle Case swaps the case of every letter: uppercase becomes lowercase and vice versa. The most common use is the 'sarcastic' or 'mocking' case (aLtErNaTiNg CaSe), but plain toggle is useful for fixing text that was accidentally typed with caps lock on. A more aggressive version is mocking case (alternating caps), which is also a row in our converter.

Yes on both. Completely free, no signup, no daily limit. 100% private: every conversion runs in your browser. Your text is never sent to our servers, never logged, never used to train any AI. Open DevTools → Network while you type: zero outbound requests carry your text.