About ToUpper

ToUpper is a free, no-nonsense online tool for converting text between different letter cases. Whether you need Sentence case for an essay, Title Case for a headline, or camelCase and snake_case for code, ToUpper handles it instantly in your browser.

We built ToUpper because switching text case manually is tedious and error-prone. Instead of retyping or fighting with "Change Case" menus in word processors, you can paste your text here, click a button, and get the result immediately — no installs, no accounts, no waiting.

Your privacy matters: all text conversion happens locally in your browser. Nothing you type or paste into ToUpper is ever uploaded, logged, or stored on our servers.

Have feedback or a feature request? We'd love to hear from you on the Contact page.