Free Case Converter — UPPERCASE, camelCase, snake_case and More Online
A case converter is a free browser tool that transforms any text into UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, and alternating case formats instantly. Select a format and the converted output appears immediately — no button required. Your text is processed entirely in your browser using JavaScript and never sent to any server.
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A case converter is a free browser tool that transforms any text into UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, and alternating case formats instantly. Select a format and the converted output appears immediately — no button required. Your text is processed entirely in your browser using JavaScript and never sent to any server. No account or sign-up is needed at any point.
How it works
- Paste or type your text into the input field — any text, phrase, sentence, or code identifier works.
- Select a case format from the buttons — UPPERCASE, lowercase, Title Case, camelCase, snake_case, and more. The output updates instantly, no button required.
- Click Copy to clipboard to grab the converted result and paste it anywhere. Nothing is saved or sent anywhere.
When to use this tool
- Converting a sentence or phrase into
camelCaseorsnake_casewhen writing code variables, function names, or database column names. - Transforming a blog post title or heading into a URL-friendly
kebab-caseslug before publishing. - Fixing inconsistent capitalization in a list of names, headings, or labels — use Title Case or Sentence case to normalize them quickly.
- Renaming identifiers during a refactor: paste the current name, switch the target convention, and copy the result directly into your editor.
- Pairing with the Word Counter to check length after reformatting, or with the Lorem Ipsum Generator to create placeholder text and convert its casing to match a design system.
Frequently asked questions
Is this case converter free?
Yes. Generating and copying converted text is always free with no usage limits. No account, credit card, or sign-up is required. The tool runs entirely in your browser and no data is sent to any server.
Does my text get sent to a server?
No. All case conversion runs entirely in your browser using JavaScript. Your text is never transmitted to autotomate servers or any third party — nothing leaves your device.
What is camelCase used for?
camelCase is the standard naming convention for variables and functions in JavaScript, TypeScript, Java, and Swift. Words are joined without spaces and each word after the first starts with a capital letter — for example: myVariableName or getUserById.
What is snake_case used for?
snake_case uses underscores between words and keeps all letters lowercase. It is the standard convention in Python, Ruby, and database column naming, and is widely used in file naming and configuration keys — for example: user_first_name or api_base_url.
What is kebab-case used for?
kebab-case uses hyphens between words and keeps all letters lowercase. It is the standard format for URL slugs, CSS class names, HTML attribute values, and file names in many front-end projects — for example: my-component or page-title.
What is the difference between camelCase and PascalCase?
Both formats join words without spaces and capitalize the first letter of each word. The difference is that camelCase keeps the very first letter lowercase (myFunction), while PascalCase capitalizes every word including the first (MyFunction). PascalCase is typically used for class names and component names in most programming languages.
Can I convert code identifiers with this tool?
Yes. You can paste any identifier or text string into the tool and convert it to any supported format instantly. This is useful when renaming variables during a refactor, adapting naming conventions between languages, or transforming labels into URL-safe slugs.
Related tools
- Word Counter
A word counter is a free browser tool that instantly counts words, characters, sentences, paragraphs, reading time, and readability score in any text.
- Lorem Ipsum Generator
A Lorem Ipsum generator is a free browser tool that creates placeholder text in paragraphs, words, or sentences.