The quickest way to change font size depends on what you're looking at

Most programs let you enlarge text using Ctrl and the plus key (hold Ctrl, then press + repeatedly). To shrink text, use Ctrl and the minus key. Release Ctrl when you reach the size you want. This works in web browsers, email clients, word processors, and many other applications.

If keyboard shortcuts don't work in your program, look for a menu option instead. In most applications, this lives under View or Format. Some programs also have a zoom slider or percentage display near the bottom right of the window — you can click the number or drag the slider to adjust size when ready.

For text that stays small no matter what program you open, you can enlarge fonts system-wide through your operating system settings. This affects menus, buttons, and labels across your entire computer, not just one document or website.

Key Takeaways

  • Press Ctrl and the plus key (+) together to enlarge text in most programs; press Ctrl and minus (-) to shrink it.
  • If keyboard shortcuts don't work, check the View or Format menu for a zoom or text size option.
  • You can change the default font size for your whole computer through Display Settings (Windows) or System Preferences (Mac).
  • Some websites and programs remember your zoom level, so you may need to reset it if you switch devices or clear your browser cache.

Using keyboard shortcuts in Windows and Mac

The Ctrl+plus and Ctrl+minus method works the same way on both Windows and Mac computers. On a Mac, you can also use Command+plus and Command+minus if Ctrl doesn't respond. Hold the key combination down and tap the plus or minus key as many times as you need — most programs jump in 10 to 25 percent increments with each tap.

If you're using a laptop keyboard without a separate number pad, the plus key is usually Shift+equals. Hold Ctrl (or Command on Mac), then press Shift+equals to enlarge. The minus key is typically just the minus sign on the top row, so Ctrl+minus works as written.

To reset text back to its original size, press Ctrl+0 (zero) on Windows or Command+0 on Mac. This returns the zoom level to 100 percent in most programs.

Finding font size controls in menus

If keyboard shortcuts don't work in your program, open the View menu at the top of the window. Look for options labeled "Zoom," "Text Size," "Font Size," or "Magnification." Click the option and choose a larger percentage or size from the list that appears.

Some programs put this option under Format instead of View. Microsoft Word, for example, has font size controls in the Format menu and also in the toolbar at the top — you'll see a dropdown box with a number (like "12" for 12-point font). Click that box and select a larger number, or type a custom size.

Email programs like Outlook and Gmail often have zoom controls in View. Spreadsheet programs like Excel have zoom sliders at the bottom right of the window — drag the slider to the right to enlarge, or click the plus button next to it.

Changing the default font size for your entire computer

On Windows 10 or 11: Right-click on your desktop (the blank area) and select "Display settings." Scroll down to "Scale and layout" and look for "Change the size of text, apps, and other items." The default is usually 100 percent. Click the dropdown and select 125 percent, 150 percent, or higher. You'll need to restart some programs or log out and back in for the change to take full effect.

On Mac: Open System Preferences (or System Settings on newer Macs) and click "Displays." Look for "Resolution" or "Scaled." Select "Larger Text" or a lower resolution option — lower resolutions make everything on screen appear larger. The change takes effect when ready.

Changing system-wide font size affects menus, buttons, window titles, and text across all your programs. It does not override zoom settings you've already made in individual programs — if you've enlarged text in one browser tab to 150 percent, it will stay at 150 percent even after you change your system settings.

Adjusting text size in web browsers

Web browsers have their own zoom controls separate from your system settings. Use Ctrl+plus and Ctrl+minus in Chrome, Firefox, Edge, or Safari to enlarge or shrink the text and images on a webpage. Most browsers remember your zoom level for each website, so the next time you visit that site, it will display at the size you set.

You can also change the default text size for all websites in your browser settings. In Chrome, click the three-dot menu, select "Settings," then "Appearance." Look for "Font size" and choose Small, Medium, Large, or Very Large. In Firefox, go to Settings, scroll to "Fonts and Colors," and adjust the default font size there.

If a website has very small text and zoom doesn't help enough, try changing your browser's default font size to Large or Very Large. This affects all websites you visit unless you've set a custom zoom level for a specific site.

Fixing text that's still too small after adjusting settings

If you've enlarged text in your program but it's still hard to read, check whether the program has its own separate font size setting. Some applications have both a zoom level (which enlarges everything proportionally) and a font size setting (which only changes text). You may need to adjust both.

In Microsoft Word and similar programs, you can select all text (Ctrl+A) and then change the font size in the toolbar. This overrides the zoom level and makes the text permanently larger in that document. If you want all new documents to use a larger font, change the default font size in the template or style settings.

For websites that ignore your browser zoom, try using your browser's reader mode if available. In Firefox and Safari, this strips away ads and sidebars and displays the article in a clean, readable format with a font size you can control. Look for a small icon in the address bar that looks like lines of text or an open book.

What to do if zoom resets or doesn't save

Some programs reset your zoom level every time you open them. If this happens, check the program's preferences or settings menu for a "Remember zoom level" or "Save window state" option. Turn this on if it's available.

In web browsers, clearing your cache or cookies can erase saved zoom levels for websites. If you notice websites returning to their default size after you clear your browser data, you can exclude cookies from the clear operation. In Chrome, go to Settings > Privacy and Security > Clear browsing data, then uncheck "Cookies and other site data."

If you're using a shared computer, each user account can have its own system-wide font size setting. Log in with your account and adjust the display settings — they won't affect other users' accounts.

Frequently Asked Questions

Why does Ctrl+plus not work in my program?

Some older programs don't support keyboard zoom shortcuts. Try the View or Format menu instead. If neither works, the program may not have a built-in zoom feature — in that case, you can enlarge text system-wide through your Display Settings (Windows) or System Preferences (Mac), which will affect that program along with everything else on your screen.

Can I make text larger in just one program without affecting others?

Yes. Use Ctrl+plus in that program alone, or change the font size through its menu. This zoom level stays in that program only. If you want to enlarge text across all programs, change your system-wide display settings instead.

What's the difference between zoom and font size?

Zoom enlarges everything proportionally — text, images, buttons, and spacing all get bigger together. Font size changes only the text itself. Most programs use zoom for web pages and documents, while font size controls are more common in word processors and email clients.

My browser remembers zoom for some websites but not others. Why?

Browsers save zoom levels per domain, so zoom.us and zoom.com are treated as separate sites. If a website uses a subdomain you don't usually visit, the browser may not remember your previous zoom setting. You can also lose saved zoom levels if you clear your browser cache — avoid clearing "Cookies and other site data" if you want to keep zoom preferences.

Is there a way to make fonts larger without zooming in on images too?

In most programs, no — zoom enlarges everything together. However, in word processors like Word, you can select text and increase the font size in the toolbar without zooming. In web browsers, some websites let you choose a text-only view or reader mode, which displays text at a size you control without enlarging images.