Converting text between different letter cases is a frequent need for writers, developers, and content creators. Our free online case converter supports eight case styles in a single click — no copying to Word, no manual editing. Writers use it to fix accidental CAPS LOCK text, developers use camelCase and snake_case for variable naming, and designers use Title Case for headings and button labels. Paste your text, click the style you need, and copy the result instantly. The converter handles long documents just as easily as single words.
Supported Case Styles
- UPPER CASE — all letters capitalized. Good for acronyms, headings, and emphasis.
- lower case — all letters in lowercase. Useful for email addresses and URL slugs.
- Title Case — first letter of each word capitalized. Standard for titles, headings, and names.
- Sentence case — only the first letter of each sentence capitalized. Best for body text and descriptions.
- aLtErNaTe CaSe — alternating lower and upper characters. Primarily for memes and stylized text.
- camelCase — each word capitalized except the first, no spaces. Standard in JavaScript, Java, and Swift for variable names.
- snake_case — words joined by underscores, all lowercase. Common in Python, Ruby, and database column names.
- kebab-case — words joined by hyphens, all lowercase. Standard for URL slugs and CSS class names.
Frequently Asked Questions
Does this work with non-English characters?
Yes. The converter uses JavaScript's native toUpperCase() and toLowerCase() which correctly handle accented characters (é, ü, ñ, etc.) in most major European languages.
Is there a character limit?
No hard limit. The converter runs in your browser and handles large amounts of text smoothly.