Convert Case — Free Online Text Case Converter
Instantly transform your text between 10 popular case formats. Paste your text below and click any button to convert. No sign-up, no limits.
How to Use the Convert Case Tool
Using the case converter is simple: paste or type your text in the input box above, then click one of the 10 conversion buttons. Your transformed text appears instantly below. Click "Copy to Clipboard" to use it anywhere.
Supported Case Formats
UPPERCASE — converts all letters to capitals. Useful for headings, acronyms, and emphasis.
lowercase — converts all letters to small case. Common for email addresses, URLs, and normalizing text.
Title Case — capitalizes the first letter of every word. Perfect for blog titles, book names, and headlines.
Sentence case — capitalizes only the first letter after a period. Standard for paragraphs and body text.
camelCase — no spaces, first word lowercase, subsequent words capitalized. Standard in JavaScript and TypeScript.
PascalCase — like camelCase but the first word is also capitalized. Used for class names in most programming languages.
snake_case — words separated by underscores, all lowercase. Common in Python, Ruby, and database column names.
kebab-case — words separated by hyphens, all lowercase. Used in URLs, CSS classes, and file names.
CONSTANT_CASE — like snake_case but all uppercase. Used for constants and environment variables.
dot.case — words separated by dots, all lowercase. Used in package names and configuration keys.
Who Uses This Tool?
Developers use it to format variable names, class names, and constants across different programming languages. Writers use it to fix capitalization in titles and headings. Students use it to format citations and references. Anyone who works with text can save time with instant case conversion.
Frequently Asked Questions
What is a case converter?
A case converter is an online tool that transforms text between different capitalization formats like UPPERCASE, lowercase, Title Case, camelCase, snake_case, and more. It saves time when formatting text for code, documents, or social media.
Is this tool free to use?
Yes, the Convert Case tool is completely free with no sign-up required. You can use it unlimited times with no restrictions.
Is my text stored or sent to a server?
No. All text conversion happens entirely in your browser using JavaScript. Your text never leaves your device — we do not store, log, or transmit any data.
What is camelCase used for?
camelCase is commonly used in programming for variable names and function names in languages like JavaScript, Java, and TypeScript. The first word is lowercase and each subsequent word starts with a capital letter (e.g., myVariableName).
What is the difference between snake_case and kebab-case?
snake_case uses underscores between words (e.g., my_variable_name) and is common in Python and Ruby. kebab-case uses hyphens (e.g., my-variable-name) and is common in URLs, CSS class names, and file names.
Can I convert case on mobile?
Yes! This tool is fully responsive and works on all devices — phones, tablets, and desktops. Just paste your text and tap the conversion button.
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