Case Converter | Upper, lower, title in this tab

What Case Converter is

You drop copy into Text. Modes sit as chips. Output redraws as you type. Nothing waits for a submit. Use it for drafts, titles, captions, and messy paste from chat or a PDF.

UPPER CASE and lower case call the locale methods in the browser. Title Case tries unicode word starts when the engine allows letter classes in a regex. If that path fails, it falls back to Capitalized Case. Sentence case looks for . ? ! and lifts the next letter. Capitalized Case uppercases the first letter of each word and lowers the rest. Names such as McDonald still need a hand edit after Title Case. There is no surname dictionary.

How to use it

Paste or type in Text.
Tap UPPER, lower, Title, Sentence, or Capitalized.
Read the live output. Switch chips to compare.
Copy the result. Keep the source if you still need the original casing.

Common uses

Fix a shouty email before you send it. Turn a headline into Title Case for a slide. Flatten ALL CAPS from a scan. Make a product name sentence-shaped for body copy. Normalize a list of labels so they match a design system. Clean a comment dump before a client review. Prepare alt text that should not look like a banner. Convert a sticky-note dump into readable sentences. Check how a slogan looks in each mode before you lock a brand lockup.

Designers use it when a brief arrives in mixed case. Writers use it after a voice-to-text dump. Support teams use it on ticket titles that arrived in caps. Students use it on essay headings. Shop owners use it on product titles a supplier sent in upper case. You can run the same string through Word Count if you also need a tally of words and reading time.

Title Case is a visual guess, not a style-guide editor. Small words such as “of” or “and” may still rise. Accented letters usually follow the locale upper and lower maps. Emoji and digits stay as they are. A line with no sentence end stays in the same shape until you add punctuation. If a client needs Chicago or AP title rules, treat this page as a first pass and finish by hand.

Privacy

The text is not uploaded. We do not keep a paste history. Refreshing the page clears both boxes. Close the tab if the draft was sensitive.