Convert your text to uppercase, lowercase, title case, camelCase, snake_case, kebab-case, and more formats instantly.
💡 Tip: Paste your text and click on any case format to copy it instantly to your clipboard.
Text "case" refers to how the letters, word boundaries, and separators of a piece of text are styled — whether words are capitalized, separated by spaces, underscores, or hyphens, and whether letters are upper or lower case. English prose typically uses Sentence case or Title Case, while programming languages rely on conventions like camelCase, PascalCase, snake_case, and kebab-case to name variables, functions, files, and URLs consistently.
Different contexts expect different case styles: a blog headline reads best in Title Case, a JavaScript variable is usually camelCase, a Python variable or database column is typically snake_case, and a URL slug or CSS class is often kebab-case. Manually retyping text to match a required style is slow and error-prone, especially across long documents or code identifiers.
A Case Converter is a tool that takes any block of text and instantly transforms it into multiple casing styles at once, so you can pick whichever format you need without retyping anything by hand.
This Case Converter accepts text typed directly, pasted, or uploaded from a .txt or .md file, and simultaneously produces nine formats — UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, and dot.case — displayed live in a Quick Copy sidebar. Every result updates as you type, and each one can be copied to your clipboard or downloaded as a .txt file individually.
Type or paste your text into the main textarea, or click "Upload File" to load a .txt or .md file from your computer.
As soon as you type, all nine case formats — UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, and dot.case — are generated live in the Quick Copy panel on the right.
Scan the Quick Copy sidebar for the case style you want. Each entry shows a live preview of the converted text.
Click any result to copy it straight to your clipboard, or use the download option to save that specific format as a .txt file.
Click the "Clear" button to wipe the input text and reset all nine results.
Both Title Case and Sentence case first lowercase the entire input before recapitalizing, so an acronym like "NASA" or "NYC" becomes "Nasa" or "Nyc" instead of staying all-caps. Re-capitalize known acronyms manually after conversion if needed.
These formats insert a separator only where a lowercase letter is immediately followed by an uppercase letter. Runs of consecutive capitals (e.g. "URLParser") don't get split correctly, so the acronym can merge with the following word instead of forming its own segment.
Sentence case only capitalizes the very first letter of the text and the first letter after a ".", "!", or "?". A lowercase pronoun "i" appearing elsewhere in the sentence (e.g. "hello i am here") is left lowercase, since English grammar rules like capitalizing "I" aren't applied.
Because the input is lowercased before word boundaries are re-capitalized, converting "user ID" to camelCase produces "userId" rather than "userID" — the acronym is treated as a normal word.
Extra spaces, tabs, or punctuation are treated as word separators in the space-based conversions (Title Case, camelCase, etc.), which can produce unexpected extra separators (like double underscores) in snake_case, kebab-case, or dot.case output.
A normal phrase converted into the identifier-style formats used in code.
Input
user profile settings
Output
camelCase: userProfileSettings PascalCase: UserProfileSettings snake_case: user_profile_settings kebab-case: user-profile-settings dot.case: user.profile.settings
A lowercase draft heading formatted for display.
Input
the quick guide to remote work in 2026
Output
Title Case: The Quick Guide To Remote Work In 2026 Sentence case: The quick guide to remote work in 2026
Inconsistently typed text cleaned up into consistent extremes.
Input
HeLLo WoRLD fRoM DataUtil
Output
UPPERCASE: HELLO WORLD FROM DATAUTIL lowercase: hello world from datautil
No. All conversions run locally in your browser using JavaScript. Your text is never sent to a server.
camelCase starts with a lowercase letter and capitalizes the first letter of every subsequent word (e.g. "userProfile"). PascalCase capitalizes the first letter of every word, including the first one (e.g. "UserProfile"). PascalCase is commonly used for class names, while camelCase is common for variables and function names.
Title Case, Sentence case, camelCase, and PascalCase all lowercase the text first and then re-capitalize based on word boundaries, so an all-caps word like "API" becomes "Api". This is expected behavior — re-capitalize acronyms by hand afterward if you need to preserve them exactly.
They all join words with a separator instead of spaces: snake_case uses an underscore, kebab-case uses a hyphen, and dot.case uses a period. snake_case is common in Python and database naming, kebab-case is common in URLs and CSS classes, and dot.case is used in some configuration keys and file naming schemes.
Yes. The tool detects lowercase-to-uppercase letter boundaries (like the "V" in "myVariable") and inserts the appropriate separator, so "myVariableName" converts correctly to "my_variable_name" or "my-variable-name". This detection does not work reliably on runs of consecutive capital letters (acronyms).
You can upload .txt or .md files. The file's contents are loaded into the input box and all nine case formats are generated immediately.
Yes. Click any individual entry in the Quick Copy sidebar to copy just that result to your clipboard, or use its download option to save only that format as a .txt file.