Case Converter
Type or paste text and convert it to any common letter case with one click — from Title Case headings to snake_case variable names. Results appear instantly as you type.
Which case should I use?
Writers usually need Title Case for headings and Sentence case for cleaning up text pasted from all-caps sources. Developers rename identifiers constantly: camelCase is the convention in JavaScript and Java, PascalCase names classes and React components, snake_case is standard in Python, SQL columns and most env-var names, while kebab-case is what CSS class names, URLs and npm packages prefer.
This converter tokenises your input on spaces, hyphens, underscores and existing camel humps, so it can rebuild the phrase in any target style — user-name / userName / user_name all convert to each other losslessly. Word capitalisation for Title Case keeps small words like "a, an, the, of, in, on, and, or, to" lowercase unless they start the title.
FAQ
- Does it preserve line breaks?
- Sentence case and the plain upper/lower modes work line by line and keep your paragraph structure. The identifier styles (camel/snake/kebab) treat the input as one phrase.
- Is my text sent anywhere?
- No — conversion is pure JavaScript running in your tab. Paste confidential text safely.