Lowercase to Uppercase Converter
Sometimes your text needs to stand out — and that's where this lowercase to uppercase converter comes in. Whether you're formatting a title, fixing a paragraph, or just hit Caps Lock too late, this tool helps you convert to capital letters instantly.
Keep reading to learn:
- What uppercase and lowercase letters are;
- What a lowercase to uppercase converter does; and
- When to use lowercase letters and when to switch to uppercase.
Let's turn text into ALL CAPS — for those in the back! 🎤😅
Uppercase and lowercase letters
Uppercase letters — also called capital letters or majuscule letters — are the bold, tall versions of the alphabet. You use them for names, acronyms, titles, and emphasis.
In contrast, lowercase letters (or minuscules) make up most of your text — the "everyday" letters of writing.
💡 The terms uppercase and lowercase come from traditional printing. In old letterpress shops, printers kept capital letters in the upper drawer (or "case") and smaller ones in the lower one.
🔎 Are you curious about how this naming came to be? Check our related articles: and .
What is a lowercase to uppercase converter?
As the name suggests, a lowercase to uppercase converter is a tool that changes all your small letters into uppercase. For example:
good morning → GOOD MORNING ☀️
It can also handle sentences with mixed capitalization, like this:
It's Time For Breakfast → IT'S TIME FOR BREAKFAST 🥐
If you ever need to go the other way around, you can also try our uppercase to lowercase converter, which allows you to switch between both versions whenever you need to.
💡 Want to know when to actually use capital letters? Check out our .
When to use lowercase letters and when to switch to uppercase
Knowing when to use lowercase or uppercase letters can make your text easier to read and more professional. Here's a quick guide:
Use uppercase letters for:
- The first letter of a sentence.
- Proper nouns, like names of people, places, or brands.
- Acronyms or initialisms (e.g., NASA, BMR, GPA).
- Emphasis or headings — when you want text to stand out.
Use lowercase letters for:
- The main body of text in paragraphs.
- Common nouns that aren't part of a title or name.
- Most casual or conversational writing, like emails or messages.
🙋 With a lowercase to uppercase converter, you can quickly flip text when needed — for example, turning headings into ALL CAPS or fixing paragraphs typed in lowercase by mistake.
💡 If you want to understand how capitalization affects things like coding, passwords, or text comparison, check out our article on .
How to use the lowercase to uppercase converter
Using this capital letter converter is as simple as it gets:
- Type or paste your text into the box.
- The converter automatically changes lowercase to uppercase in real time.
- Copy the result and paste it wherever you need.
That's it! — instant ALL CAPS 🧢
FAQs
How to change lowercase to uppercase in Word on a Mac?
To change lowercase to uppercase in Word on a Mac:
- Highlight your text.
- Press
Shift + fn + F3(or justShift + F3if your function keys are unlocked). - Keep pressing until it switches to uppercase.
Or just paste your text into Omni's lowercase to uppercase converter.
How to convert all lowercase to caps in Word?
To convert all lowercase to uppercase in Word:
- Select your text.
- Press
Shift + F3. - Keep pressing
Shift + F3until it switches to uppercase.
You can also use Omni's lowercase to uppercase converter to change your text to all caps.
What is the key to converting lowercase to uppercase?
The key to convert lowercase to uppercase is Shift. Hold Shift while typing a letter to capitalize it, or use Caps Lock to type all uppercase letters continuously.
How many lowercase letters are there?
There are 26 lowercase letters in English — the same as uppercase — but they’re used differently depending on grammar and style.