Ever looked at your keyboard and noticed a mysterious key labeled Scroll Lock? You’re not alone. Many people have no clue what it does. In fact, on lots of modern keyboards, it doesn’t seem to do anything at all!
Let’s take a fun and simple dive into the world of the Scroll Lock key. We’ll find out why it’s there, what it used to do, and if it still has any uses today.
So, what is Scroll Lock?
The Scroll Lock key was first introduced in the early days of computing. Back then, computers were more basic and didn’t have fancy mice or touchpads. Everything had to be done using the keyboard.
The Scroll Lock key was meant to change how the arrow keys worked. Normally, pressing the arrow keys moves your cursor (the blinking line) up, down, left, or right in a document or spreadsheet.
With Scroll Lock turned on, the arrow keys would scroll the whole page instead of moving the cursor. Think of it like this:
- Scroll Lock OFF: Arrow keys move the cursor.
- Scroll Lock ON: Arrow keys scroll the window up and down.
Sounds useful, right? Well, it used to be.
Why it’s not used much anymore
As software got smarter and mice became standard, people didn’t need Scroll Lock. Most apps just ignored it. Over time, it faded into the background and became one of those “just there” keys.
Try turning it on now. Does anything happen? Probably not.
But don’t count it out just yet. Some programs still make use of it!

Modern uses for Scroll Lock
Here are a few cases where Scroll Lock still makes a difference:
- Microsoft Excel: This is one of the few apps where Scroll Lock still works. Turn it on, and the arrow keys will scroll the entire sheet instead of selecting new cells. It can be helpful when viewing big spreadsheets.
- Remote desktop tools: Sometimes Scroll Lock is used to change between modes or shortcuts while working on another computer remotely.
- Certain games: Some older video games might use it as part of their controls.
- Accessibility tools: Scroll Lock may also be used in some assistive technologies to toggle behavior.
So, it’s not totally useless. But it’s also not a must-have key for most of us.
Where is it on the keyboard?
On many full-size keyboards, Scroll Lock appears in the top row near the Pause Break and Print Screen keys. Laptops might not include it at all, or you may have to press Fn + another key to activate it.

How do I know if Scroll Lock is on?
Good question! Some keyboards have a tiny light labeled “Scroll Lock.” It turns on when the function is active, just like the Caps Lock or Num Lock lights.
If your keyboard doesn’t have this light, don’t worry. In certain programs, a message will appear, or there may be a small indicator on your screen.
How can I turn it off?
All you have to do is press the Scroll Lock key again. It’s a toggle — press once to turn it on, press again to turn it off.
If your keyboard doesn’t have a Scroll Lock key and you need it (especially for Excel!), you can use the Windows On-Screen Keyboard:
- Press Windows Key + R to open the Run box.
- Type osk and press Enter.
- Click the “ScrLk” key to toggle Scroll Lock on or off.
Fun fact!
Most people go through life never pressing the Scroll Lock key. It’s almost like a forgotten treasure chest in the attic of your keyboard. You don’t need it often, but when you do — it’s there, waiting like an old friend.
Should you care about Scroll Lock?
Mostly, no. Unless you work with Excel a lot or use old software that depends on it, you’ll probably never need it. But it’s fun to know it’s there, and what it does.
Next time you see someone puzzled by their arrow keys acting weird in Excel, you can swoop in and save the day by saying: “Hey, check if Scroll Lock is on!”
They’ll think you’re a keyboard wizard.
In short: Scroll Lock is a leftover from the early days of computing. It’s mostly unused now but still has some cool tricks in the right situations. Even if you never press it, now you at least know what it does!