The fastest way to change font size on your Mac

On a Mac, font size changes depend on where you want the change to happen. System-wide text — like menu labels, folder names, and dialog boxes — is controlled in System Settings under Accessibility. Individual apps like Mail, Safari, and Word have their own font size controls. The method takes less than a minute once you know which setting to adjust.

If you want to enlarge text across your entire Mac, go to System Settings, click Accessibility in the sidebar, select Display, and drag the Text Size slider to the right. This affects menus, buttons, and most system text. If you need to change font size in a specific app instead, that control is usually in the app's menu under Preferences or Settings.

Key Takeaways

  • System-wide text size is controlled in System Settings > Accessibility > Display > Text Size, and affects menus and dialog boxes across your Mac.
  • Individual apps like Mail, Safari, and Word have separate font size controls in their own Preferences or Settings menus.
  • In web browsers, use Command and the plus key (+) to enlarge text on a single webpage without changing your system settings.
  • If text remains too small after adjusting Text Size, check Accessibility > Display for additional options like Increase Contrast or Bold Text.

Changing font size in System Settings for menus and system text

Open System Settings by clicking the Apple menu in the top-left corner and selecting System Settings. In the sidebar on the left, click Accessibility. Then click Display in the list of options.

You will see a slider labeled Text Size with a small "A" on the left and a large "A" on the right. Drag the slider to the right to make system text larger, or to the left to make it smaller. The change takes effect when ready on your Mac's menus, buttons, and most dialog boxes. This setting does not affect text inside documents or web pages — only the Mac's own interface.

Enlarging text in Mail, Safari, and other built-in apps

Mail, Safari, Notes, and other Apple apps have their own font size controls. In Mail, open the app and go to Mail > Settings (or Preferences on older macOS versions). Look for a Fonts or Display tab, where you can adjust the size of message text. In Safari, go to Safari > Settings, click the Websites tab, and look for the Default Font Size option at the bottom.

For Notes, open the app, click Format in the menu bar, and select Text. You will see font size options there. In Preview (for viewing images and PDFs), go to Tools > Annotate, then look for text size controls in the toolbar. Each app stores this setting separately, so changing font size in Mail does not affect Safari.

Using keyboard shortcuts to zoom text in web browsers

If you want to enlarge text on a specific webpage without changing your system settings, use keyboard shortcuts. In Safari, Chrome, or Firefox, hold Command and press the plus key (+) to make text larger. Press Command and the minus key (−) to make it smaller. Press Command and 0 (zero) to return to the default size.

This method zooms the entire webpage, not just the font — images and layout scale up too. The zoom level stays in place for that website until you change it again, so you can set different zoom levels for different sites. This is useful if one website has text that is hard to read but you do not want to change your Mac's overall text size.

Adjusting font size in Microsoft Word and Google Docs

In Microsoft Word, open a document and select the text you want to change. In the toolbar at the top, you will see a font size dropdown (usually showing a number like 11 or 12). Click it and choose a larger size, or type a custom size. You can also select all text in a document by pressing Command+A, then change the size for the entire document at once.

In Google Docs, open a document and select the text. In the toolbar, click the font size dropdown (it shows a number) and choose a new size. If you want to change the default font size for all new documents you create, go to File > Settings, adjust the default font size, and click OK. This setting applies only to documents you create after changing it, not to existing documents.

Making text easier to read with additional accessibility options

If adjusting Text Size alone is not enough, System Settings has other options that work together. In System Settings > Accessibility > Display, you can turn on Bold Text, which makes all system text thicker and easier to read. You can also enable Increase Contrast to make text stand out more against backgrounds.

For even more control, go to System Settings > Accessibility > Display and look for the option to increase the font weight or enable Reduce Transparency. Some users find that combining Text Size with Bold Text and Increase Contrast makes text much easier to read than any single setting alone. These changes affect the entire Mac, not just one app.

Changing font size in PDFs and documents you are reading

In Preview (the app that opens PDFs and images on a Mac), open a PDF and go to Tools > Annotate. Look for the text size controls in the toolbar that appears. You can also use Command and the plus key to zoom the entire PDF, which makes all text larger but also enlarges images and layout.

In Adobe Reader, open a PDF and go to View > Zoom to change the magnification level. You can set a specific percentage or choose Fit Page, Fit Width, or other preset options. In most other document readers and e-book apps, look for a font size icon (usually an "A" with an arrow) in the toolbar or menu. The method varies by app, but the control is usually straightforward to find in the View or Format menu.

Frequently Asked Questions

Does changing Text Size in System Settings affect text in all apps?

No. System Settings > Accessibility > Display > Text Size affects menus, buttons, and system dialogs, but not text inside documents, emails, or web pages. Individual apps like Mail and Safari have their own font size controls that override the system setting.

How do I make text larger on a website without changing my Mac's settings?

Use Command and the plus key (+) to zoom the webpage. This enlarges everything on that site — text, images, and layout — and the zoom level stays in place for that website. Press Command and 0 to return to normal size.

Can I set different font sizes for different apps?

Yes. Each app stores its own font size setting. You can have Mail text at one size, Safari text at another, and Word documents at a third size. Changing the font size in one app does not affect the others.

What should I do if text is still too small after adjusting Text Size?

Try combining Text Size with Bold Text and Increase Contrast in System Settings > Accessibility > Display. These options work together to make text more readable. You can also zoom individual apps using Command and the plus key.

Where is the font size control in older versions of macOS?

In macOS versions before Big Sur, go to System Preferences instead of System Settings, then click Accessibility and Display. The Text Size slider is in the same location. The process is identical on older and newer versions.