How to change your display size on Windows and Mac
Your screen's display size is controlled by two separate settings: resolution (how many pixels fit on your screen) and scaling (how large Windows or Mac makes text and icons appear). Most people adjust scaling first, because it changes what you see without forcing your monitor to work harder. If scaling alone does not fix the problem, you can then change resolution.
On Windows 10 or 11, right-click your desktop and select Display settings. Under "Scale and layout," you will see a dropdown menu showing percentages like 100%, 125%, or 150%. Move the slider to the right to make everything larger, or to the left to make everything smaller. Windows applies the change when ready. On Mac, open System Settings, click Displays, and select Scaled at the bottom. Choose the option labeled "Larger text" or "More space" — larger text is the same as increasing Windows scaling.
If scaling does not give you the size you want, you can change resolution instead. In Windows Display settings, scroll down to "Display resolution" and click the dropdown. Lower numbers (like 1024 × 768) make everything larger but give you less screen space. Higher numbers (like 2560 × 1440) make everything smaller but fit more on your screen. On Mac, the Displays settings show resolution options in the same menu where you chose scaling. Pick the one that looks sharpest and feels comfortable to read.
Key Takeaways
- Scaling (in Windows) or "Larger text" (on Mac) makes text and icons bigger without changing how much fits on your screen.
- Resolution controls how many pixels your monitor displays — lower resolution makes everything larger but shows less content.
- Start with scaling or text size first, because it is faster and does not force your monitor to work differently.
- If your screen looks blurry after changing resolution, your monitor may not support that resolution well — try a different one.
- Some programs (like web browsers) have their own zoom settings that override your system settings.
Why your display size might look wrong
Display size problems usually fall into two categories: the text is too small to read comfortably, or the text is so large that important windows do not fit on your screen. Both happen most often when you connect a new monitor or when Windows or Mac updates and resets your settings.
If text is too small, your scaling or resolution is set too high. If windows are too large and get cut off at the edges, your scaling or resolution is set too low. A third problem — blurry text — usually means your monitor does not support the resolution you chose. Most modern monitors work best at their native resolution, which is the highest resolution they were designed for. You can find your monitor's native resolution in its manual or on the manufacturer's website by searching for the model number.
Adjusting scaling for different programs
Some programs do not respect your system scaling settings and display at 100% no matter what you chose. This is common with older software or specialized programs like CAD tools. If one program looks too small or too large while everything else looks right, you can fix it without changing your whole system.
On Windows, right-click the program's icon or shortcut and select Properties. Click the Compatibility tab, then Change high DPI settings. Check the box for "Override high DPI scaling behavior" and click explore. This tells Windows to scale that program separately. On Mac, right-click the program in your Applications folder, select Get Info, and check Open in low resolution if the program looks too large. This is less common on Mac because most programs respect system scaling.
Fixing blurry text after changing resolution
Blurry text usually means your monitor is displaying at a resolution it does not support well. Most monitors have a native resolution — the one they were built for — and look sharpest at that setting. If you force a different resolution, the monitor has to stretch or compress the image, which makes text look fuzzy.
To find your monitor's native resolution, search for the model number (usually printed on the back or bottom of the monitor) plus "native resolution" or "specs." Common native resolutions are 1920 × 1080 for 24-inch monitors, 2560 × 1440 for 27-inch monitors, and 3840 × 2160 for 4K monitors. Set your resolution to that number and the text should become sharp again. If you need text larger than your native resolution allows, use scaling instead — it keeps the image sharp while making everything bigger.
Using external monitors with laptops
When you plug an external monitor into a laptop, Windows and Mac usually detect it automatically and explore scaling based on the monitor's size. Sometimes the scaling is wrong — the external monitor might look too small or too large compared to your laptop screen. You can fix this without unplugging anything.
On Windows, right-click your desktop and open Display settings. You will see both your laptop screen and external monitor listed. Click the external monitor, then adjust its scaling separately from your laptop. On Mac, open System Settings, click Displays, and select your external monitor from the list at the top. Adjust its scaling independently. This lets you have different scaling on each screen — useful if your laptop has a small high-resolution screen and your external monitor is larger.
Scaling for accessibility and eye strain
If you have vision difficulties or find yourself squinting at your screen, increasing scaling is often better than sitting closer to the monitor. Scaling makes text larger without making your monitor work harder or forcing you to adjust your viewing distance. Most people find 125% to 150% scaling comfortable for everyday work, though this varies by monitor size and personal preference.
If you use your computer for long hours, you might also want to reduce blue light or increase contrast, which are separate settings from display size. On Windows, open Display settings and look for "Night light" to reduce blue light. On Mac, open System Settings, click Displays, and look for "True Tone" or color temperature options. These do not change display size but can reduce eye strain when combined with comfortable scaling.
Frequently Asked Questions
What is the difference between resolution and scaling?
Resolution is how many pixels your monitor displays — it controls how much content fits on your screen. Scaling is how large Windows or Mac draws text and icons on top of those pixels. You can have the same resolution with different scaling, or the same scaling with different resolutions. Scaling is usually the better choice if you just want things to look bigger.
Why does my external monitor look blurry?
Your external monitor is probably set to a resolution it does not support well. Find your monitor's model number and search for its native resolution. Set your resolution to that number in Display settings. If text is still too small after that, use scaling to make it larger instead of changing resolution again.
Can I have different scaling on my laptop screen and external monitor?
Yes. On Windows, open Display settings and click each monitor separately to adjust its scaling independently. On Mac, select each display in System Settings and adjust scaling for each one. This is useful when your laptop screen and external monitor are different sizes.
What if I change resolution and everything looks worse?
Change it back to your previous setting or to your monitor's native resolution. Your monitor displays most sharply at its native resolution, which you can find by searching the model number online. If you need things larger, use scaling instead — it keeps the image sharp.
Does changing display size affect gaming or video performance?
Yes. Lower resolution means your graphics card has to draw fewer pixels, so games run faster. Higher resolution looks sharper but requires more power. Scaling does not affect performance because it happens after your graphics card finishes drawing. If you game, you may want to lower resolution for better frame rates, then use scaling to keep text readable.