Online Case Converter – Convert Text to Uppercase, Lowercase & Title Case
Convert text case online for free. Transform any string to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case, or aLtErNaTiNg CaSe instantly.
How to Use the Case Converter
- 1 Paste or type the text you wish to format into the text box above.
- 2 Click any of the transformation buttons at the top (e.g., UPPERCASE, Title Case, camelCase, snake_case).
- 3 Watch your text transform instantly inside the editor without reloading or submitting the page.
- 4 Check your live character and word counters located above the editor.
- 5 Click "Copy to Clipboard" to copy the formatted text with a single click.
Why Use Our Free Case Converter?
10 Text Case Formats
Includes programmer formats (camelCase, snake_case, kebab-case, PascalCase) alongside editorial formats (Title Case, Sentence case, UPPERCASE).
Smart Title Casing
Intelligently preserves minor connecting words (e.g., in, of, the, and) in lowercase unless they appear at the start of a title.
Zero Latency & 100% Client-Side
Everything processes locally in your browser with no network latency, guaranteeing 100% privacy for confidential documents or code snippets.
One-Click Clipboard Copy
Quickly export and paste your transformed string directly into your IDE, CMS, or social media composer.
Frequently Asked Questions
What is the difference between Title Case and Sentence case?
Title Case capitalizes the first letter of each major word (e.g., "The Fast and the Furious"), while Sentence case capitalizes only the very first letter of each sentence and proper nouns (e.g., "The quick brown fox jumps over the lazy dog.").
When should I use camelCase or snake_case?
camelCase (e.g., "myVariableName") is standard for identifiers in JavaScript, TypeScript, and Java. snake_case (e.g., "my_variable_name") is common in Python, Rust, and SQL database column names.
Is my data secure when using this case converter?
Yes. All string operations run locally in your web browser. Nothing is ever sent to any remote server or logged in a database.
Can I convert code variables or filenames?
Yes! The programmer casing buttons (camelCase, PascalCase, snake_case, and kebab-case) strip spaces and special characters to format valid code identifiers and URL slugs.
Does this tool support international or accented characters?
Yes, our case converter supports Unicode character mapping for accented and non-ASCII Latin characters.