🔤 Case Converter
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Convert text between UPPER, lower, Title, camelCase, PascalCase, snake_case and more.
Paste text and it appears instantly in eight case formats side by side: UPPERCASE, lowercase, Title Case, camelCase, PascalCase, snake_case, kebab-case, and CONSTANT_CASE. Each variant sits in its own row with a dedicated copy button. No submit button is needed — conversion happens as you type, useful when renaming variables or formatting identifiers across programming languages.
📋 When to Use the Case Converter
You pasted a title in ALL CAPS that needs to be sentence case before the presentation starts, or a developer handed you camelCase keys that belong in snake_case for your config file. Your text is transformed locally in the browser; nothing you paste is sent anywhere.
⚙️ How the Case Converter Works
The Case Converter processes your input using conversion algorithms that run entirely in your browser. When you paste or upload content and select the output format, JavaScript parses the input, transforms it using format-specific logic (encoding, decoding, parsing, serializing), and produces the converted output. For file conversions, all processing uses browser-native APIs and JavaScript libraries loaded from CDN — your files are never uploaded to any server. The entire pipeline from input to output stays on your device.
How to Use the Case Converter
- Type or paste your text into the input area at the top.
- The tool instantly converts your text into all supported cases: UPPER, lower, Title, camelCase, PascalCase, snake_case, kebab-case, and CONSTANT_CASE.
- Click the Copy button next to any format to copy that version to your clipboard.
- Use the converted text in your code, documents, or naming conventions.
What eight case formats does the Case Converter produce simultaneously?
UPPERCASE, lowercase, Title Case, camelCase, PascalCase, snake_case, kebab-case, and CONSTANT_CASE all appear as you type — each in its own row with a dedicated copy button. The tool handles whitespace splitting and word-boundary detection to correctly transform multi-word input for programming naming conventions. The 1 MB input limit is enforced; beyond that, the tool shows an error rather than silently truncating.
Frequently Asked Questions
What case formats does this tool support?
The Case Converter supports 8 formats: UPPER CASE, lower case, Title Case, camelCase, PascalCase, snake_case, kebab-case, and CONSTANT_CASE. Each format serves different purposes in programming, writing, and data formatting.
When should I use camelCase vs PascalCase?
In most programming languages, camelCase (first word lowercase) is used for variables and functions, while PascalCase (all words capitalized) is used for class names and constructors.
What is the difference between snake_case and kebab-case?
snake_case uses underscores (my_variable) and is common in Python, Ruby, and database column names. kebab-case uses hyphens (my-variable) and is common in URLs, CSS class names, and CLI arguments.
Can I convert text between all formats at once?
Yes, the tool displays all 8 format conversions simultaneously. When you type or paste text, every format updates in real time — no need to switch between modes.
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