Headings and labels
Short headings, button labels and form field names often use uppercase to stand out. Keep it to a few words.
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Paste your text and click UPPER CASE. Every letter becomes a capital letter, instantly, with no sign-up and no limit. Nothing leaves your browser.
Last updated: October 30, 2026
Converting to uppercase takes three steps and works on any amount of text, from a single word to a full document.
Type or paste your text into the box. It can be one word, a heading or a long document. There is no character limit.
The result appears immediately in the output box, with every letter converted to a capital letter. Numbers, punctuation and spaces are left as they are.
Press Copy result to send the uppercase text to your clipboard, or download it as a plain .txt file.
Uppercase means capital letters: A, B and C instead of a, b and c. Text written in uppercase is also called all caps. An uppercase converter changes every lowercase letter to its capital form and leaves digits, spaces and punctuation alone.
Uppercase, capital letters and all caps describe the same result. Caps Lock is different: it is a keyboard key that makes you type capitals. A converter fixes text after it has been written, so you do not have to retype it.
Small caps is a typographic style, not a different kind of text. It comes from fonts and formatting, so a plain-text converter cannot create it.
| You paste | You get |
|---|---|
| hello world | HELLO WORLD |
| Summer Sale 2026 | SUMMER SALE 2026 |
| café au lait | CAFÉ AU LAIT |
| straße | STRASSE (German ß becomes SS) |
All caps gets attention, so it works best for short text that needs to stand out.
Short headings, button labels and form field names often use uppercase to stand out. Keep it to a few words.
Safety notices, legal disclaimers and status flags such as PAID or URGENT use all caps for emphasis.
Convert a list of country codes, product codes or abbreviations to uppercase so they match a required format.
Constants and environment variables are usually written in uppercase with underscores. The main case converter has a CONSTANT_CASE option for that.
A few things to check before you publish text in all caps.
Long passages in all caps are generally harder to read, so keep uppercase for short text.
Uppercase changes every letter, so a brand written as iPhone becomes IPHONE.
Your original text stays in the input box. Switch to lower case or Sentence case to see it in another format.
Short answers to what people ask most about converting text to uppercase.
Paste your text into the box and click UPPER CASE. Every letter becomes a capital letter at once. You can then copy the result or download it as a .txt file.
There is no character limit. Very large documents may take a moment longer on an older device, but the tool will not cut your text off or ask you to upgrade.
Yes for scripts that have capital letters, such as accented Latin, Greek and Cyrillic: café becomes CAFÉ. Some letters expand when capitalized: the German ß becomes SS. Scripts without capitals, such as Chinese, Japanese or Arabic, stay unchanged.
There is no difference: uppercase and capital letters mean the same thing. Title Case is different because it capitalizes only the first letter of major words, which you can do with the Title Case button.
Click lower case in the converter, or use the lowercase converter. Your original text stays in the input box either way.
No. The conversion runs in your browser using JavaScript, so your text is not sent to a server or stored anywhere.
Need a different format? These tools work the same way: open, paste, copy.