Online Case Converter

Sentence case is perfect for formal documents and article content formatting, capitalizing the first letter of each sentence while keeping remaining letters lowercase. It's particularly suitable for document writing, content editing, academic writing, and translation work, helping to quickly fix text case errors and ensure paragraph text meets standard formatting requirements.

Lower case converts all letters to lowercase and is commonly used for programming variable names, URL addresses, and search keyword processing. In programming development, it can generate variable names, function names, and file names. For SEO optimization, it processes URL paths and keywords, and it's also useful for data cleaning to unify database field formats and generate system configuration parameters.

Upper case converts all letters to uppercase and is suitable for titles, warning messages, and constant definitions. It can create eye-catching warning and alert text, generate uppercase titles for posters and banners, define constant names in programs, and unify brand name uppercase formats. It's particularly useful when you need to emphasize or highlight text.

Capitalized case capitalizes the first letter of each word while keeping remaining letters lowercase, commonly used for names, place names, titles, and proper nouns. It can standardize person and company name case, format street names and city names in address information, unify product model and name formats, and create professional table column headers.

Alternating case makes letters alternate between uppercase and lowercase, creating unique visual effects commonly used in creative design and social media content. It can create personalized nicknames and status, generate unique game character names, make special effect decorative text, and can also be used to increase password complexity and security.

Title case is the standard title format with main words capitalized and prepositions/conjunctions in lowercase, suitable for standardizing book and article titles. It can format blog and news article titles, book chapter titles, academic papers and report titles, and create professional presentation slide titles.

Inverse case completely reverses the current case - uppercase becomes lowercase and lowercase becomes uppercase, used for special text processing needs. In text proofreading, it can quickly identify case errors in original text, batch process irregular data formats, check case issues in code, and generate special effect art fonts.