Case Converter
Convert text between different cases instantly — UPPERCASE, lowercase, Title Case, camelCase, snake_case, and more.
About Case Converter
Our free Case Converter tool transforms text between different letter cases instantly. Whether you need to convert text to UPPERCASE for emphasis, lowercase for consistency, Title Case for headings, or programming cases like camelCase and snake_case for code, this tool handles it all with a single click.
Common use cases include: fixing accidentally left Caps Lock text, formatting titles and headings properly, converting variable names between programming conventions, preparing text for URLs (kebab-case), and standardizing text for databases. The tool works entirely in your browser for instant results.
The converter intelligently handles edge cases like acronyms in Title Case, proper sentence boundaries in Sentence case, and correct word splitting for programming case conversions. All processing is done client-side — your text never leaves your browser.
Frequently Asked Questions
Q What is the difference between Title Case and Sentence case?
Title Case capitalizes the first letter of every word (e.g., "The Quick Brown Fox"), which is commonly used for titles and headings. Sentence case only capitalizes the first letter of each sentence (e.g., "The quick brown fox"), which is standard for body text and paragraphs.
Q When should I use camelCase vs snake_case?
camelCase (e.g., myVariableName) is commonly used in JavaScript, Java, and C# for variable and function names. snake_case (e.g., my_variable_name) is preferred in Python, Ruby, and for database column names. PascalCase (e.g., MyClassName) is typically used for class names in many programming languages.
Q Can I convert very long texts?
Yes! The Case Converter handles texts of any length. Since all processing happens in your browser using JavaScript, there are no server limits. Even documents with thousands of words are converted instantly.