Convert text instantly
Sentence case, lower, UPPER, Title, Capitalized, aLtErNaTiNg, InVeRsE.
Transform your text with our fast, secure, and completely free online text case converter. No registration required, no data stored - everything happens locally in your browser.
Keyboard shortcuts: Ctrl/⌘+B to copy • Ctrl/⌘+S to download • Ctrl/⌘+Backspace to clear
How It Works
1. Enter Text
Type or paste your text into the input area, or drag and drop a text file.
2. Choose Format
Select from 7 different text transformations with a single click.
3. Copy or Download
Copy to clipboard or download as a text file. Use keyboard shortcuts for faster workflow.
Every case format, explained
Paste your text once and switch between seven formats with one click. Here is what each one does and when to use it.
| Format | Example | Best for |
|---|---|---|
| Sentence case | The quick brown fox. It jumps over the dog. | Fixing text typed in caps lock, emails, messages and paragraphs. Only the first letter of each sentence is capitalized. |
| lower case | the quick brown fox jumps over the dog | Cleaning up email addresses, tags, usernames and lists before importing them into a spreadsheet or database. |
| UPPER CASE | THE QUICK BROWN FOX JUMPS OVER THE DOG | Short labels, acronyms, warnings and buttons. Avoid it for long text: it is harder to read and feels like shouting. |
| Capitalized Case | The Quick Brown Fox Jumps Over The Dog | Names, product lists and menu items where every word should start with a capital letter. |
| Title Case | The Quick Brown Fox Jumps over the Dog | Headlines, article and video titles. Short English words such as a, and, of, the and to stay lowercase unless they come first or last. |
| aLtErNaTiNg cAsE | tHe QuIcK bRoWn FoX | Memes, jokes and sarcastic social media posts. |
| InVeRsE CaSe | tHE qUICK bROWN fOX | Swapping the case of every letter, for example to undo text typed with caps lock accidentally on. |
What people use a case converter for
Fix caps lock mistakes
Typed a whole paragraph in capitals? Paste it and press Sentence case instead of retyping it.
Write clean headlines
Title Case applies the usual English headline rules, so blog posts, YouTube titles and slides look consistent.
Prepare data
Normalize names, emails and product lists to lower or capitalized case before importing them into Excel, Google Sheets or a CRM.
Count while you write
The editor shows characters, words, lines and reading time live, useful for meta descriptions, social posts and essays with a word limit.
Private by design
Your text never leaves your device. Every conversion runs in JavaScript inside your browser: nothing is uploaded, stored or logged on our servers. Once the page has loaded, the converter keeps working even if your connection drops.
Privacy PolicyFrequently Asked Questions
Quick answers about the case converter.
Yes. Every tool on the site is free, with no account, no limit on text length and no watermark.
No. The conversion happens entirely in your browser with JavaScript. Your text is not uploaded, saved or shared.
Capitalized Case puts a capital letter on every word. Title Case follows headline rules and keeps short words such as a, and, of and the in lowercase, except at the start or end of the title.
Paste the text in the editor and click lower case. To keep a capital at the start of each sentence, click Sentence case instead. Then copy the result with the Copy button or Ctrl/⌘+B.
Yes. The converter uses your browser’s Unicode rules, so letters such as é, ç, ñ, ã and ß are converted correctly. The small-word rules of Title Case are based on English.
Yes. Drag and drop a .txt or .md file into the editor, convert it, then download the result as a text file with the Download button or Ctrl/⌘+S.