Text Case Converter
Convert text between multiple cases instantly.
How to Use the Text Case Converter
The Text Case Converter lets you instantly transform text into any of nine different case formats. It's invaluable for developers, writers, marketers, and anyone who works with text regularly. Stop manually retyping text — paste it once and apply any transformation with a single click.
Available Conversions
- UPPERCASE: Every character becomes capital. Used for headings, emphasis, acronyms, and constants in code (e.g., MAX_VALUE).
- lowercase: Every character becomes lowercase. Useful for normalizing data, email addresses, or when working with case-insensitive systems.
- Title Case: The first letter of every word is capitalized. Standard for book titles, article headings, and proper names.
- Sentence case: Only the first letter of each sentence is capitalized, like normal written prose. Great for correcting text that was accidentally left in all caps.
- aLtErNaTiNg: Alternates between lowercase and uppercase characters. Used for meme text and playful emphasis online.
- camelCase: Words are joined with the first letter of each subsequent word capitalized (e.g., myVariableName). The standard convention for variable and function names in JavaScript, Java, and Swift.
- PascalCase: Like camelCase but the first word is also capitalized (e.g., MyClassName). The standard for class names in most object-oriented languages.
- snake_case: Words are separated by underscores, all lowercase (e.g., my_function_name). Common in Python, Ruby, and database column names.
- kebab-case: Words are separated by hyphens, all lowercase (e.g., my-css-class). Standard for CSS class names, HTML IDs, and URL slugs.
How to Use
Type or paste your text into the input area. Then click any of the case buttons to apply that transformation. The converted text appears immediately in the output box. You can switch between different cases repeatedly without re-entering the original text — just click a different button. When you're happy with the result, click Copy Output to copy to clipboard.
The active conversion is highlighted so you always know which mode is currently applied. The output area is read-only to prevent accidental edits — if you want to make manual changes, copy the output and paste it back into the input area.
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Frequently Asked Questions
What's the difference between camelCase and PascalCase?
Both join multiple words without spaces or separators, but camelCase starts with a lowercase letter (e.g., myVariableName) while PascalCase starts with an uppercase letter (e.g., MyClassName). camelCase is standard for variables and functions in JavaScript, Java, and Swift. PascalCase is the convention for class and type names in most languages including C#, Java, and Python.
Does Title Case capitalize every word including "a", "the", "and"?
This tool capitalizes the first letter of every word without exception. Strict title case rules (like the Chicago Manual of Style) say that articles (a, an, the), short prepositions (in, on, at, for), and coordinating conjunctions (and, but, or) should not be capitalized unless they start the title. For a simple utility, consistent capitalization of all words is often what users need. If you need strict editorial title case, manually lowercase those small words after converting.
How does Sentence case handle multiple sentences?
Sentence case capitalizes the first letter of each sentence. A sentence is detected when a period, exclamation mark, or question mark is followed by whitespace and then another word. The first character of the entire text is also capitalized. All other characters are lowercased. This is the standard casing for body text in most written communication.
Can I use this for programming identifiers?
Yes! The camelCase, PascalCase, snake_case, and kebab-case options are specifically designed for use with code identifiers. Just type the words separated by spaces (e.g., "user profile settings") and click your desired case to get "userProfileSettings", "UserProfileSettings", "user_profile_settings", or "user-profile-settings". Note that special characters and existing separators are stripped when applying these code-style cases.
Does it preserve numbers and special characters?
For UPPERCASE, lowercase, Title Case, Sentence case, and aLtErNaTiNg modes, all non-letter characters (numbers, punctuation, symbols) are preserved exactly as-is. For the code-style cases (camelCase, PascalCase, snake_case, kebab-case), non-alphanumeric characters are treated as word separators and removed from the output, since identifiers in most languages can only contain letters, numbers, and specific separators.