Change text case in one click
This case converter rewrites the capitalization of your text without touching the words themselves. Drop in a heading, a paragraph, a spreadsheet cell or a block of code comments, choose a style, and the tool reformats it instantly — no retyping, no fixing one letter at a time.
Everything happens in your browser, so even long documents convert the moment you click, and nothing you paste is sent anywhere.
The five case styles
- UPPERCASE — every letter capitalized, for emphasis or constants like API_KEY.
- lowercase — every letter lowered, handy for tidying shouty text or normalizing tags.
- Title Case — the first letter of each word capitalized, the standard for headlines and titles.
- Sentence case — only the first letter of each sentence capitalized, matching normal prose.
- aLtErNaTiNg — letters alternate between lower and upper for a playful, meme-style effect.
When a case converter saves time
It's the fastest fix for text that arrived in the wrong format: a headline someone typed in all caps, product names pasted in lowercase, a caption that needs sentence case, or data exported with inconsistent capitalization. Instead of editing letter by letter, you convert the whole block at once and copy it straight back out.
Frequently asked questions
What is the difference between Title Case and Sentence case?
Title Case capitalizes the first letter of every word, which suits headlines. Sentence case capitalizes only the first letter of each sentence, like normal prose.
Does converting case change my text's spelling or spacing?
No. Only the capitalization of letters changes. Your words, punctuation, line breaks and spacing stay exactly as you entered them.
Is my text uploaded anywhere?
No. The converter runs entirely in your browser with JavaScript. Nothing you paste is sent to a server, logged or stored.