The quickest way to change font size on your Mac

The fastest method depends on what you're looking at. In most Mac apps—Mail, Notes, Safari, Word—you can select text and use Command + Plus (+) to make it larger or Command + Minus (−) to make it smaller. Each keystroke bumps the size up or down one step. This works in web browsers, email clients, and document editors without opening any menus.

If you're adjusting text that isn't selectable (like menu text or system labels), or if you want to change the default size for everything on your screen, you'll need to go into System Settings instead. That method takes about 30 seconds and affects your entire Mac.

Key Takeaways

  • Command + Plus makes text larger; Command + Minus makes it smaller in most Mac apps.
  • System Settings lets you change the default text size for menus, buttons, and system labels across your whole Mac.
  • Some apps like Mail and Notes have their own font size controls in the Format menu if keyboard shortcuts don't work.
  • If you need larger text everywhere—including on websites—accessibility settings in System Settings offer zoom and display scaling options.

Using keyboard shortcuts in apps

The Command + Plus and Command + Minus shortcuts work in nearly every Mac app that displays text. Select the text you want to resize (or click anywhere in a paragraph if you want to resize all text in that document), then hold Command and press Plus or Minus. You'll see the change happen when ready.

This method works in Safari when you're reading web pages, in Mail when you're composing or reading messages, in Notes, in Word, and in most other applications. The size change usually stays in place for that app until you change it again, though some apps reset to default when you close and reopen them.

If the keyboard shortcut doesn't work in a specific app, try the Format menu at the top of the screen. Look for "Font" or "Text Size" and click it. You'll see a list of size options or a slider you can drag to adjust.

Changing default text size in System Settings

To change the size of system text—the labels on buttons, menu items, and window titles—open System Settings (the gear icon in your Dock or Applications folder). Click Displays in the left sidebar, then look for "Text size" near the bottom of the window.

You'll see a slider with a small "A" on the left and a large "A" on the right. Drag it to the right to make all system text larger, or to the left to make it smaller. The change takes effect when ready across your entire Mac. This affects menus, buttons, and labels, but not the text inside documents or web pages—use the app-level shortcuts for those.

Using accessibility zoom for everything on screen

If you need text and everything else on your screen to be larger, System Settings has a zoom feature that scales your entire display. Open System Settings, click Accessibility in the left sidebar, then click Zoom.

Turn on "Zoom" by clicking the toggle switch. You can then use keyboard shortcuts to zoom in and out: Option + Command + Plus (+) to zoom in and Option + Command + Minus (−) to zoom out. This magnifies everything on your screen proportionally, not just text. You can also adjust the zoom level by dragging the slider under "Zoom level."

Changing font size in Mail and Notes

Mail and Notes have their own font controls. In Mail, open a message or start composing one. Highlight the text you want to resize, then click Format in the menu bar and select Font. A small window will appear with font options and a size field where you can type a specific number or use the up and down arrows to adjust.

In Notes, select your text, then click Format in the menu bar and look for Text or Font. You'll see size options there. Both apps remember your preferred size for new notes and messages, so if you always want larger text, set it once and it will stay that way.

Making text larger in Safari and web browsers

When you're reading a website in Safari, Command + Plus will enlarge the text and images on that page. The zoom level stays in place for that website—if you visit it again, it will remember your preference. If you want to reset a website to its default size, use Command + 0 (zero).

You can also change Safari's default text size for all websites. Open Safari, click Safari in the menu bar, then Settings. Click the Appearance tab and look for "Font size." Drag the slider to set a new default. This won't affect websites that use fixed text sizes, but it will enlarge readable text on most pages.

When to use each method

Use Command + Plus/Minus when you're working in a single app and want to adjust text quickly without opening settings. Use System Settings Displays when you want system menus and buttons to be larger permanently. Use Accessibility Zoom when you need everything on your screen—text, images, buttons, all of it—to be larger at once.

If you find yourself always zooming in, or if you have vision concerns, the Accessibility settings are designed for that and won't slow down your Mac. They're not a workaround—they're a built-in feature meant to be used.

Frequently Asked Questions

Why doesn't Command + Plus work in some apps?

Some older or specialized apps don't support the standard zoom shortcuts. Try the Format menu instead, or check the app's preferences. If neither works, the app may not have a built-in zoom feature—in that case, use System Settings Accessibility Zoom to magnify your entire screen.

Will changing font size in System Settings affect my documents?

No. System Settings Displays changes only the size of system text (menus, buttons, labels). Text inside your documents, emails, and web pages stays the same unless you resize it separately using Command + Plus or the app's Format menu.

Can I set different font sizes for different apps?

Yes. Each app remembers its own zoom level independently. Zoom in Mail to 120%, then switch to Safari and zoom to 150%—each app keeps its own setting. System Settings changes explore to the whole Mac, but app-level changes are separate.

Does zooming in make my Mac slower?

No. Using Command + Plus or System Settings zoom does not affect your Mac's performance. It's purely a display adjustment.

How do I reset font size back to normal?

In most apps, use Command + 0 (zero) to reset to the default size. In System Settings, drag the text size slider back to the middle. In Accessibility Zoom, drag the zoom level slider back to 100%.