What Is an Uppercase Converter?

Quick answer: An uppercase converter rewrites small letters as capitals for you: keep calm and carry on turns into KEEP CALM AND CARRY ON. Paste, press one button, and copy the all-caps version; no retyping, no Caps Lock.

Uppercase letters are also called capitals, caps, or majuscules, and text written entirely in them is known as all caps.

Typing a long passage again with Caps Lock on is slow and error-prone, and many apps have no command for it. Here the whole box changes at once, or just the words you highlight. Web addresses, email addresses, hashtags, and @mentions can be left untouched, because some of them stop working or look wrong in capitals. Two extra tools turn long names into acronyms and give you the uppercase function for spreadsheets and programming languages.

• 1 Click to capitalize everything
• 4 Acronym styles
• 9 Code and formula snippets
• 7 Uppercase formats

How Do You Convert Lowercase to Uppercase?

1. Paste the text: Any length up to 100,000 characters.
2. Highlight if needed: Select a word or line to capitalize only that part.
3. Press UPPERCASE: Links and emails stay as typed while the option is on.
4. Copy the capitals: Or download them as a .txt file.

Switch between UPPERCASE, lowercase, Title Case, and 20 more formats with the case converter.

When Is It Right to Use Capital Letters for Everything?

Good fit for all caps	Better in normal case
Short signs: EXIT, STAFF ONLY, WET FLOOR	Paragraphs, emails and chat messages
Labels and packaging: FRAGILE, THIS WAY UP	Long headlines and article titles
Acronyms: NASA, UNICEF, PDF	Body text on websites
Legal key phrases that must stand out	Whole contracts or terms pages
Logos, posters and button labels in design	Anything a screen reader must read aloud at length

In online messages, a sentence in capitals reads as shouting, so save it for a single word you really want to stress.

How Do You Type Capital Letters on a Keyboard or Phone?

Device or app	How to get capitals
Any computer keyboard	Hold Shift for one capital, or press Caps Lock to type in capitals until you press it again
iPhone and iPad	Double-tap the Shift arrow to lock capitals on
Android with Gboard	Double-tap Shift for Caps Lock, or select text and tap Shift to change its case
Microsoft Word	Select the text and press Ctrl + Shift + A for the All Caps effect, or Shift + F3 to change the letters
Google Docs	Format, Text, Capitalization, UPPERCASE
Excel and Google Sheets	=UPPER(A2) in a helper column

To go the other way and turn capitals into small letters, use the lowercase converter.

Word’s All Caps effect only changes how the text looks; the letters underneath stay small and come back if you copy them elsewhere. This converter changes the letters themselves.

Should You Type Capitals or Use CSS on a Website?

For headings and buttons on a website, it is usually better to type the words in normal case and display them in capitals with the CSS rule text-transform: uppercase. Search engines and screen readers then see ordinary words; you can change the design later without retyping, and copied text pastes in normal case. Type real capitals when the capitals are part of the meaning, such as acronyms, or when the text will leave the website, for example in a printed label or a file name.

Does Uppercase Work for Every Language?

Capital letters exist in alphabets such as Latin, Greek, Cyrillic, and Armenian, and this converter handles them all. Some letters change in special ways: the German ß becomes SS, so a word can grow by one character, and accented letters keep their accents, as in ÉCOLE. In Turkish and Azerbaijani, the dotted and dotless i have their own capitals, İ and I, which general converters cannot guess. Scripts without a case system, such as Arabic, Hebrew, Chinese, Japanese, and Hindi, pass through unchanged.

Who Uses an All Caps Converter?

• Shops and offices: print clear notices and door signs.
• Warehouses: write packaging labels and handling marks.
• Designers: set poster lines, logos and banner text.
• Data teams: standardise codes, postcodes and IDs before matching records.
• Developers: name constants and environment variables in capitals.
• Form fillers: meet forms that ask for BLOCK CAPITALS.

Capital Letter Terms

Uppercase

Capital letters; the name comes from the uppercase type in old print shops.

Block capitals

Plain, separate capital letters, often requested on official forms.

All caps

Text where every letter is a capital.

Caps Lock

The key that keeps the keyboard typing capitals until it is pressed again.

Acronym

A word formed from initials and said as a word, such as NATO.

text-transform

The CSS property that displays text in capitals without changing it.

For letters that are physically larger rather than capitals, try the big text generator.

What Can This Capital Letters Converter Do?

Whole or part

Everything, or a selection.

Safe links

URLs and emails stay working.

Undo

Every step can be reversed.

Acronyms

PDF, P.D.F. or J.R.R. style.

Snippets

UPPER for nine tools.

Download

Save the capitals as .txt.

Need a long name shortened?

Turn any organisation or phrase into neat capital initials.

ABC Open the Acronym Maker 

Capital Letters Not Coming Out as Expected?

Problem	Reason	Fix
A web link stayed in small letters	Links are protected so they keep working	Untick the links option to capitalize them too
A German word got longer	ß has no traditional capital and becomes SS	This is standard; replace SS with ẞ by hand if you prefer
Turkish i looks wrong	Turkish uses İ for the dotted i	Correct those letters by hand after converting
Nothing changed in my text	The script has no capital letters	Scripts like Arabic and Chinese have no case to change

Emphasise a word without shouting by using the bold text generator.

Tips for Using All Caps Well

Keep it short

Capitals work best for five words or fewer.

Add a little spacing

Slightly wider letter spacing makes capitals easier to read on signs.

Do not shout in email

Use bold or a short sentence instead of capitals for emphasis.

Keep the original

Normal-case text is easy to capitalize later; the reverse loses names.

Small capitals give a softer all-caps look; make them with the small caps generator.

Uppercase Converter FAQ

What is an uppercase converter?

A free tool that turns small letters into capital letters, so you never have to retype text with Caps Lock on.

Lowercase to uppercase: how does it work here?

Put the text in the box and press UPPERCASE. Every letter becomes a capital at once.

How can I capitalize only part of my text?

Highlight that part in the box before pressing the button; the rest stays as it is.

Will web links and emails be capitalized?

Not while the links option is ticked. URLs, email addresses, hashtags and @handles stay exactly as you typed them.

Which Word shortcut makes text all caps?

Ctrl+Shift+A toggles the All Caps effect, while Shift+F3 rotates a selection through upper, lower and capitalized words.

How do I make text uppercase in Google Docs?

Select it, then open Format, Text, Capitalization, and choose UPPERCASE.

Which Excel formula changes text to capitals?

=UPPER(A2) returns the text in cell A2 in capital letters.

How do I convert a string to uppercase in JavaScript?

Call toUpperCase() on it, for example, name.toUpperCase().

How do I uppercase a string in Python?

Use the upper() method, for example, name.upper().

What is the SQL function for uppercase?

UPPER(column_name) returns the column value in capital letters in most databases.

How do I make an acronym from a long name?

The Acronym and Initials Maker keeps one letter from every word, and can skip connecting words like of or and.

Why did ß turn into SS?

Traditional German has no capital ß, so standard uppercasing writes SS instead.

Is typing in all caps rude?

In messages, it often reads as shouting, so use it for single words or short notices rather than whole sentences.

Is uppercase the same as capital letters?

Yes. Uppercase, capitals, caps, and majuscules all mean the same tall letter forms.

Can I convert capitals back to small letters?

Yes. Press back to lowercase, or Undo to restore exactly what you had.

Does the converter work with accents and other alphabets?

Yes. Accented letters, Greek, and Cyrillic all have capitals and convert correctly.

Is there a length limit for capitalizing?

Up to 100,000 characters in one go.

Is the uppercase converter free?

Yes, every feature is free, and there is no account to create.

Does my text get stored?

No. The capitals are produced locally on your device, and no copy is kept anywhere.

Can I download the result?

Yes. Download .txt saves the capitalized text as a plain text file.

Can I use it on a phone?

Yes. Paste, tap UPPERCASE and copy; the page is built for small screens.

Make It Capital

abc → ABC

Capital letters for signs, labels, codes, and forms. ⇪ Convert to Uppercase