Case Converter — Change Text Case Instantly
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, and more.
About the Case Converter
A case converter reformats text into a different letter-casing style without retyping it: UPPERCASE, lowercase, Title Case, Sentence case, and camelCase are the most common. It's a small task, but doing it by hand across a long document or a variable name is slow and error-prone.
This tool is handy for cleaning up text pasted from inconsistent sources, formatting headlines correctly, preparing variable or file names for code, or fixing text that was accidentally typed in all caps.
Worked example
Example: pasting 'the quick BROWN fox jumps' and selecting Title Case returns 'The Quick Brown Fox Jumps', while camelCase returns 'theQuickBrownFox' with spaces removed — handy when naming a JavaScript variable.
Frequently asked questions
- What's the difference between Title Case and Sentence case?
- Title Case capitalizes the first letter of most words (as in headlines), while Sentence case capitalizes only the first letter of each sentence and leaves the rest lowercase, matching normal prose rules.
- Does Title Case capitalize every single word?
- Standard title-case rules typically lowercase short articles, conjunctions, and prepositions (a, an, the, and, of) unless they're the first or last word. This tool applies a simplified version that capitalizes each word's first letter — review names, acronyms, and short connector words for style preferences.
- Can I use this to format code variable names?
- Yes — the camelCase option removes spaces and capitalizes subsequent words, which is the standard convention for JavaScript, Java, and many other programming languages' variable names.
- Will converting case affect punctuation or numbers?
- No, punctuation, numbers, and symbols are left untouched — only alphabetic letters have their case changed.