How to change display size on your device
Display size — also called scaling or zoom — makes text, icons, and windows appear larger or smaller on your screen without changing your screen's resolution. On Windows, you adjust this in Settings under Display. On Mac, you use System Preferences under Displays. On phones and tablets, scaling is usually called zoom and lives in Accessibility settings. The steps take less than a minute, and you can change it back anytime.
The reason to change display size is simple: if text is too small to read comfortably or icons are too cramped, scaling makes everything bigger. If your screen feels cluttered, scaling makes everything smaller to fit more on the screen at once. This is different from changing resolution, which affects how sharp your display looks — scaling just changes what size things appear to your eye.
Key Takeaways
- Windows display scaling is found in Settings > System > Display, where you can choose from preset sizes like 100%, 125%, or 150%.
- Mac users adjust scaling in System Preferences > Displays by choosing between Scaled options, which change how large text and icons appear.
- On iPhones and Android phones, zoom settings are in Accessibility — called Display & Text Size on iPhone and Display on Android.
- Changing display size does not affect your screen's sharpness or resolution, only how large items appear to you.
- Most devices let you preview the change before you confirm it, so you can test whether the new size works for you.
Changing display size on Windows 10 and 11
Open Settings by pressing the Windows key and typing "Settings," then select the Settings app. Go to System in the left sidebar, then click Display. Under the "Scale" section, you will see a dropdown menu showing your current scaling percentage — usually 100%, 125%, or 150%. Click the dropdown and choose the size that works for you. Windows will show you a preview of how text and icons will look at each size.
If none of the preset sizes feel right, you can create a custom scaling percentage. In the same Display settings, look for "Advanced scaling" or "Custom scaling" (the exact name varies by Windows version). Click it and enter a percentage between 100% and 500%. Windows will ask you to sign out and back in for the change to take full effect, though you will see the preview immediately.
If text looks blurry after you change the scaling, Windows may not have refreshed properly. Restart your computer, and the blurriness should clear up. If it does not, go back to Display settings and try the next size up or down — sometimes the in-between sizes cause rendering issues on certain displays.
Changing display size on Mac
Click the Apple menu in the top-left corner and select System Preferences (or System Settings on newer Macs). Click Displays. You will see a row of radio buttons at the bottom labeled "Scaled." The leftmost option is the smallest text and icons; the rightmost is the largest. Click the option that makes text comfortable to read. Mac shows you a live preview as you hover over each option, so you can see exactly how large things will be before you select it.
Mac does not offer custom percentages the way Windows does — you choose from the preset scaled options only. If the preset sizes do not match what you need, you can also adjust text size separately in System Preferences > Accessibility > Display, where you can increase the font size for menus and buttons without changing the overall scaling.
Changing display size on iPhone
Open Settings and go to Accessibility. Tap Display & Text Size. You will see a slider labeled "Text Size" — drag it to the right to make text larger, or to the left to make it smaller. Below that is a toggle for "Larger Accessibility Sizes," which unlocks even larger text options if you need them. Tap it on, then use the slider again to access the biggest sizes available.
The text size setting affects most built-in apps like Mail, Messages, and Notes. Third-party apps may not respond to this setting — they follow their own text size rules. If you want to zoom the entire screen (not just text), go back to Accessibility and tap Zoom, then turn it on. This lets you pinch to zoom in and out on any part of your screen, though it works differently than the text size slider.
Changing display size on Android phones and tablets
Open Settings and go to Accessibility. Tap Display (or Display and Text Size, depending on your phone's manufacturer). You will see a slider for text size — drag it right to enlarge text, or left to shrink it. Some Android phones also offer a "Display size" option above the text size slider, which scales icons and buttons in addition to text. Move that slider to change the overall scale of your interface.
Like iPhone, third-party Android apps do not always respect the system-wide text size setting. If an app's text is still too small after you adjust the setting, open that app's own settings and look for a text size or font size option there. Some Android phones also have a "Magnification" option in Accessibility that works like iPhone's Zoom feature, letting you pinch to magnify any part of the screen.
When display size changes do not work as expected
If you change the display size and nothing happens, restart your device. Windows and Mac sometimes need a restart to apply scaling changes fully, and phones usually need a restart if the setting does not take effect immediately. If restarting does not help, go back to the display settings and make sure you actually clicked the new size — sometimes the setting reverts if you did not confirm it.
If text looks blurry or pixelated after scaling, this usually means your display is rendering at a non-native resolution. On Windows, try moving to the next scaling size up or down — sometimes odd percentages like 110% or 140% cause blurriness on certain monitors. On Mac, this is rare, but restarting usually fixes it. On phones, blurriness is almost never a problem, since mobile displays handle scaling smoothly.
If you change the display size and some windows or apps look cut off or misaligned, the app may not support scaling properly. This is most common on older Windows programs. Try moving back to 100% scaling for that app, or check the app's settings to see if it has its own zoom or text size option.
Display size versus resolution: what is the difference
Display size (scaling) changes how large things appear on your screen without changing how many pixels your screen displays. If you scale from 100% to 150%, everything gets 50% larger, but your screen still shows the same number of pixels — they are just grouped into larger visual elements. Resolution is the actual number of pixels your screen can show — a 1920×1080 display has 1920 pixels wide and 1080 pixels tall.
Changing resolution actually changes how sharp your display looks and how much fits on the screen. Changing display size just changes what size things appear to your eye. Most people should leave resolution alone and only adjust display size. Resolution is useful only if you want to fit more or less on your screen, and changing it can make text look blurry if you choose a resolution your monitor was not designed for.
Frequently Asked Questions
Will changing display size affect how sharp my screen looks?
No. Display size (scaling) only changes how large things appear. Your screen's sharpness depends on resolution, which stays the same when you adjust scaling. If text looks blurry after you scale, restart your device — this usually fixes rendering issues.
Can I set different display sizes for different monitors?
Yes, on both Windows and Mac. If you have multiple monitors connected, each one has its own display settings. On Windows, go to Settings > System > Display, click the monitor you want to adjust, and change its scaling separately. On Mac, open System Preferences > Displays, click the monitor in the list, and adjust its scaled option.
What is the difference between display size and font size?
Display size scales everything on your screen — text, icons, windows, and buttons. Font size scales only text. If you want to make text larger but keep icons and buttons the same size, use the font size setting instead. On Windows, this is in Settings > Accessibility > Display. On Mac, it is in System Preferences > Accessibility > Display.
If I change display size, will it affect my documents or photos?
No. Display size only changes how things appear on your screen while you are using your device. It does not change the actual size of files, documents, or photos. When you print or share a document, it will print or display at its original size, not at the scaled size you see on your screen.
Can I use display size to make my screen easier to read without wearing glasses?
Yes. Increasing display size makes text and icons larger, which can reduce eye strain and make reading easier. Start by increasing text size in Accessibility settings, then adjust overall display scaling if you need everything larger. You can also enable high contrast modes in Accessibility to make text stand out more against the background.