How to change screen size on your computer
Screen size on a computer means the resolution — the number of pixels displayed across your screen's width and height. A higher resolution (like 1920 × 1080) shows more content in a smaller space. A lower resolution (like 1024 × 768) makes everything larger and easier to read. You change it through your operating system's display settings, and the process takes less than a minute on either Windows or Mac.
The reason to change resolution is usually comfort or visibility. If text is too small, lower your resolution. If you want to fit more on screen at once, raise it. Your monitor has a native resolution — the sharpest one — but you can set it lower if you need larger text or icons.
Key Takeaways
- On Windows 10 or 11, right-click the desktop, select Display Settings, scroll to Scale and Layout, and choose your resolution from the dropdown menu.
- On Mac, go to System Settings (or System Preferences on older versions), click Displays, and select your preferred resolution from the list.
- Your monitor has a native resolution that produces the sharpest image — usually the highest number listed.
- Changing resolution takes effect when ready, and you can revert to your previous setting within 15 seconds if the new one looks wrong.
Changing resolution on Windows 10 and 11
Right-click on an empty area of your desktop and select Display Settings from the menu. A settings window opens showing your current display. Scroll down until you see Scale and Layout. Under that section, you will find a dropdown menu labeled Display Resolution. Click it to see all available resolutions for your monitor.
Select the resolution you want from the list. Windows shows your current resolution with a checkmark. Higher numbers (like 1920 × 1080) make everything smaller and fit more on screen. Lower numbers (like 1024 × 768) make everything larger. Once you click a new resolution, Windows applies it when ready. A dialog box appears asking if you want to keep the change. You have 15 seconds to click Keep Changes or it reverts automatically. If the text is too blurry or the screen looks wrong, let the timer run out and it will switch back.
If you do not see the resolution you want, your graphics driver may need an update. Go to Device Manager (search for it in the Start menu), expand Display Adapters, right-click your graphics card, and select Update Driver. Windows will search for the latest version online.
Changing resolution on Mac
On Mac, click the Apple menu in the top-left corner and select System Settings (on newer macOS versions) or System Preferences (on older ones). Click Displays in the sidebar. A window shows your current display settings.
Look for a section labeled Resolution or Scaled. On newer Macs, you may see options like "More Space" (higher resolution, smaller text) or "Larger Text" (lower resolution, bigger text). Click the option you prefer. The change takes effect when ready. Unlike Windows, Mac does not ask for confirmation — if you want to undo it, straightforward go back to Displays and select your previous setting.
If you have an external monitor connected, the Displays window shows both your built-in screen and the external one. Click the one you want to adjust, then change its resolution the same way.
Understanding resolution numbers and native resolution
Resolution is written as two numbers: width × height, measured in pixels. Common resolutions include 1024 × 768, 1280 × 720, 1366 × 768, 1920 × 1080, and 2560 × 1440. The first number is how many pixels wide the image is. The second is how many pixels tall. More pixels means more detail and smaller text.
Your monitor has a native resolution — the one it was designed for. This is usually the highest resolution listed in your settings. Running your monitor at its native resolution produces the sharpest, clearest image. If you lower the resolution, the monitor has to stretch the image, which can make it look slightly blurry. If you raise it above native, the same thing happens. For the best picture quality, use your monitor's native resolution and adjust text size separately if you need larger icons or fonts.
Adjusting text size without changing resolution
If you want larger text but do not want to lower your resolution, you can scale up just the text and icons instead. On Windows, go to Display Settings, find Scale and Layout, and change the percentage under Scale (usually 100%, 125%, 150%, or 200%). This makes everything larger while keeping your resolution the same, so you do not lose screen space or sharpness.
On Mac, go to Displays and look for Scaled options. Select the option that makes text larger without changing the resolution. This approach is often better than lowering resolution because you keep the sharpness of your native resolution while getting the readability you need.
Troubleshooting when resolution options are missing or blurry
If your resolution dropdown is empty or shows only one option, your graphics driver is outdated or missing. On Windows, search for Device Manager in the Start menu, expand Display Adapters, right-click your graphics card (usually Intel, AMD, or NVIDIA), and select Update Driver. Choose Search automatically for updated driver software. Windows downloads and installs the latest version. Restart your computer and check Display Settings again.
If the screen looks blurry after changing resolution, you are probably running below your monitor's native resolution. Go back to Display Settings and select the highest resolution available — that is your native resolution. If text is too small at native resolution, use the Scale percentage instead to enlarge it.
On Mac, if you see very few resolution options, your external monitor may not be recognized properly. Disconnect the monitor cable, wait 10 seconds, and reconnect it. If that does not work, restart your Mac and try again.
What to do if your new resolution does not look right
On Windows, if you change resolution and the screen looks wrong, do nothing. A dialog box will appear asking if you want to keep the change. If you do not click Keep Changes within 15 seconds, Windows automatically reverts to your previous resolution. This safety feature prevents you from getting stuck with an unreadable screen.
On Mac, the change is when ready with no confirmation dialog. If the resolution looks wrong, go back to Displays and select your previous setting right away. Mac does not have a revert timer, so you need to change it manually.
If you accidentally set a resolution so low that you cannot read the text on screen, restart your computer. Most computers boot into Safe Mode or a recovery mode where you can access Display Settings and fix the resolution before Windows or macOS fully loads.
Frequently Asked Questions
What is the difference between resolution and screen size?
Screen size is the physical diagonal measurement of your monitor in inches (like 24 inches or 27 inches). Resolution is the number of pixels displayed on that screen. A 24-inch monitor can run at 1920 × 1080 or 1366 × 768 — the physical size stays the same, but the resolution changes how much fits on it and how large text appears.
Will changing resolution damage my monitor?
No. Your monitor can display any resolution within its supported range without damage. The worst that happens is the image looks blurry or stretched. You can change resolution as many times as you want. For the sharpest picture, use your monitor's native resolution.
Why does my resolution look blurry after I change it?
You are probably running below your monitor's native resolution. Your monitor is stretching the image to fill the screen, which causes blurriness. Go back to Display Settings and select the highest resolution available — that is your native resolution. If text is too small, use the Scale or text size setting instead of lowering resolution.
Can I change resolution on a laptop?
Yes. Laptops have built-in displays that support multiple resolutions. Go to Display Settings (Windows) or Displays (Mac) and change the resolution the same way you would on a desktop monitor. Laptop screens usually have a native resolution between 1366 × 768 and 2560 × 1440 depending on the model and screen size.
What resolution should I use?
Use your monitor's native resolution for the sharpest image. If text is too small, do not lower resolution — instead, increase the Scale percentage (Windows) or select a Larger Text option (Mac). This keeps your image sharp while making everything easier to read.