Build your Text Case Converter with AI in under 5 minutes

What is a text case converter?

A text case converter rewrites text into a different capitalisation or word-joining style — UPPERCASE, lowercase, Title Case, or the programming conventions like camelCase, snake_case, and kebab-case. It's a constant small chore for two audiences. Developers convert identifiers all day: an API returns snake_case keys, the component wants camelCase props, the constant file wants CONSTANT_CASE, the URL slug wants kebab-case. Writers and marketers need Title Case for headings, Sentence case for body copy, and a fast way to fix a heading someone typed in ALL CAPS. The canonical tools — convertcase.net, the case options buried in editors — do it, but usually one case at a time behind a dropdown. The better shape shows every case at once so you scan down and grab the one you need, and it handles the genuinely hard part — splitting `XMLHttpRequest` or `the_quick-brown` into the right words — correctly, which is where naive converters fall down.

Common features

• One input → every case rendered at once, each in its own card
• Writing cases: lower, UPPER, Title Case, Sentence case
• Programming cases: camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, Train-Case
• Fun cases: aLtErNaTiNg and InVeRsE
• One-click copy on every output card
• Acronym- and camelCase-aware word splitting (XMLHttpRequest → XML Http Request)
• A live word and character count
• Handles arbitrary separators — spaces, hyphens, underscores, dots, slashes
• Input remembered on the device between visits
• Light and dark theme variants

Real-world examples

Why FloopFloop fits text case converter projects

A case converter is the kind of tiny tool you reach for ten times a day, so it should be instant, ad-free, and yours. FloopFloop ships the converter you want — the cases you actually use, the layout you prefer, your own additions — on your own domain, with the text never leaving the browser. The clean 'conversion workbench' that ships by default shows every format at a glance rather than hiding them behind a menu, and the whole thing is one prompt away from being whatever fits your workflow.