Case
Converter.

Sometimes you just need to change "Hello World" into "hello world" or "HELLO WORLD" — and you don't want to retype the whole thing or manually fix it in a text editor. Our Case Converter handles every text case format you could need: lowercase, UPPERCASE, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, and more. Paste in your text, click a case style, and copy the result.

Paste any text into the input field and choose your target case format from the toolbar. Instant conversion, no page reload. Supports all major case conventions including camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, and more. You can convert the entire text or selectively highlight and convert specific portions. Copy to clipboard with one click.

Common uses include converting code variable names between camelCase and snake_case conventions, formatting titles and headings for blog posts, documents, or slide decks, converting imported data from CSV or Excel into consistent case formats, creating URL-safe slugs from article titles (kebab-case), and standardizing data imports for databases or CMS platforms.

This is one of those tools that's embarrassingly useful for how simple it is. Most online converters only offer 4-5 formats. Ours offers 15+ including some that developers specifically need like dot.case and path/case. It runs entirely in your browser, preserves all special characters, and doesn't limit how much text you can convert at once. Free, no ads, no signup, no usage limits.