Case Converter
Convert text between letter cases instantly — uppercase, lowercase, title, sentence, camelCase, snake_case and more. Copy any result with one click.
HELLO WORLD, THIS IS TOOLVERSE
hello world, this is toolverse
Hello World, This Is Toolverse
Hello world, this is toolverse
helloWorldThisIsToolverse
HelloWorldThisIsToolverse
hello_world_this_is_toolverse
hello-world-this-is-toolverse
HELLO_WORLD_THIS_IS_TOOLVERSE
hElLo WoRlD, tHiS iS tOoLvErSe
How to use it
Case conversion means rewriting the same words with different capitalization and word-joining rules, without changing the underlying content. A single phrase can be reshaped for a dozen different contexts — a headline, a variable name, a spreadsheet column, or a URL slug — just by changing how its letters are capitalized and how its words are separated. This tool converts your input into all ten common cases at once, so you can copy whichever one fits. Take the sentence "the quick brown fox jumps." Converted to UPPERCASE it becomes THE QUICK BROWN FOX JUMPS, and to lowercase it stays the quick brown fox jumps. Title Case capitalizes every word — The Quick Brown Fox Jumps — while Sentence case capitalizes only the first letter: The quick brown fox jumps. The programming cases drop spaces entirely: camelCase produces theQuickBrownFoxJumps (first word lowercase, each following word capitalized), PascalCase produces TheQuickBrownFoxJumps (every word capitalized), snake_case produces the_quick_brown_fox_jumps, kebab-case produces the-quick-brown-fox-jumps, and CONSTANT_CASE produces THE_QUICK_BROWN_FOX_JUMPS. aLtErNaTiNg case alternates letter by letter regardless of word boundaries: tHe QuIcK bRoWn FoX juMpS. Each case tends to belong to a specific world. Writers and editors reach for Title Case in headlines and book titles, and Sentence case for body copy and captions. Programmers use camelCase for JavaScript variables and function names, PascalCase for class and component names, and snake_case for Python variables and database or CSV column headers. kebab-case shows up constantly in URL slugs, CSS class names, and command-line flags. CONSTANT_CASE marks configuration values and environment variables that shouldn't change at runtime, making them easy to spot at a glance in source code. To split your words correctly, the converter looks for spaces, punctuation, and existing camelCase boundaries — so pasting theQuickBrownFox back in still splits into four words instead of treating it as one. Conversion never changes your original input; it only changes the copy shown in each result box, so you can try every case and copy the one you need without retyping anything.
Frequently asked questions
- What is the difference between camelCase and PascalCase?
- Both join words without spaces; camelCase starts with a lowercase letter (myVariable), while PascalCase capitalizes the first letter too (MyVariable).
- Is my text uploaded anywhere?
- No. All conversions happen in your browser — your text is never sent to a server.
- What's the difference between title case and sentence case?
- Title case capitalizes the first letter of every word; sentence case capitalizes only the first letter of each sentence.
- Does converting case change my original text?
- No — the tool never modifies what you typed. Your input stays exactly as entered in the text box; each of the ten result cards shows a separate converted copy generated fresh from that input. You can switch between results, keep editing your original text, and copy any converted version without losing or altering the source.