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

If you're reading something in a web browser, hold Ctrl (or Command on Mac) and press the plus sign (+) to make text larger, or the minus sign (−) to make it smaller. This works in Chrome, Firefox, Safari, and Edge. The change stays in place for that website until you reset it.

If you want to change the font size of everything on your screen — menus, icons, text in programs — you'll go into your operating system's display settings instead. Windows and Mac both have built-in controls for this, and the steps differ between them.

The method you choose depends on whether you need to enlarge one document, one website, or your entire computer display. Some changes are temporary; others stick around until you change them back.

Key Takeaways

  • In any web browser, use Ctrl+Plus (or Command+Plus on Mac) to enlarge text on a single website without changing anything else.
  • Windows lets you scale everything on your screen — text, icons, buttons — from the Settings app under Display.
  • Mac users can enlarge the entire display in System Settings under Displays, or use the Accessibility menu for text-only changes.
  • Most programs like Word, Gmail, and email clients have their own font size controls in the toolbar or Format menu.
  • Zooming in a browser is temporary and resets when you close the tab; system-level changes stay until you undo them.

Changing font size in web browsers

Every major browser lets you zoom in and out on any webpage without touching your computer's settings. Use Ctrl+Plus on Windows or Command+Plus on Mac to make text and images larger. Press Ctrl+Minus or Command+Minus to shrink them. Ctrl+0 (or Command+0) resets the page to its default size.

You can also click the three-dot menu in the top right corner of Chrome, Firefox, or Edge and look for a zoom slider. In Safari, go to the View menu and select "Zoom In" or "Zoom Out." These methods do the same thing — they just give you another way to reach the control.

The zoom level you set stays in place for that specific website. If you zoom in on a news site, that site will stay zoomed the next time you visit it. Other websites remember their own zoom levels separately. Closing your browser does not reset these changes; they persist until you manually zoom back to 100%.

Enlarging text and icons across your entire Windows screen

To make everything on your Windows computer larger — not just web pages, but menus, buttons, and text in all programs — open the Settings app by pressing Windows key + I. Go to System, then Display.

Under "Scale," you'll see a dropdown menu that usually shows 100%. Click it and choose a larger percentage: 125%, 150%, or 175%. Windows will ask you to sign out and back in for the change to take full effect, though you'll see the difference when ready. This scales everything proportionally, so icons, text, and buttons all grow together.

If the preset percentages don't match what you need, scroll down to "Advanced scaling" and enter a custom percentage between 100% and 500%. Be aware that some older programs may look blurry at custom zoom levels because they weren't designed to scale that way.

Enlarging text and icons on a Mac

On Mac, open System Settings (or System Preferences on older versions) and click Displays. At the bottom of the window, you'll see a "Resolution" section with a slider. Click Scaled and choose a larger option — the choices depend on your monitor, but you'll typically see options like "Larger Text" or "More Space."

If you want to enlarge text only without changing icon and button sizes, go to System Settings, then Accessibility, then Display. Turn on Increase contrast if you want, and look for Larger Accessibility Sizes. This affects text in menus and some programs but leaves other elements at their original size.

For web browsing specifically, you can also use Command+Plus in Safari, just like in other browsers, to zoom individual websites without changing your system settings.

Changing font size in Microsoft Word and Google Docs

In Microsoft Word, select the text you want to change. In the toolbar at the top, you'll see a box showing the current font size (usually "11" or "12"). Click it and choose a new size from the dropdown, or type a custom number and press Enter. You can also use the keyboard shortcut Ctrl+] to increase size or Ctrl+[ to decrease it.

In Google Docs, select your text and click the font size dropdown in the toolbar — it's the box with a number next to the font name. Choose a size or type a custom one. The change applies only to the text you selected. If you want all new documents to use a larger default font, go to File, then Settings, and change the default font size there.

Both programs remember your preference for future documents, so if you set Word to default to 14-point font, new documents will start at that size. This does not affect documents you've already created.

Changing font size in email and other programs

Gmail in a web browser responds to the Ctrl+Plus zoom method described earlier. If you use Outlook or Apple Mail, select text in a message and look for the font size control in the toolbar — it's usually a dropdown box with a number. In Outlook, it's next to the font name dropdown.

Most other programs — spreadsheets, note-taking apps, PDF readers — have font size controls in their Format menu or toolbar. If you can't find it, try selecting text and right-clicking; many programs show formatting options in a context menu.

Some programs let you set a default font size that applies to all new documents. Check the program's Preferences or Settings menu (usually under the program name on Mac, or File on Windows) for a "Default Font" or "Text Size" option.

When to use system-level changes versus browser zoom

Use browser zoom (Ctrl+Plus) when you're reading one website and find the text too small. It's quick, temporary, and doesn't affect anything else on your computer. Use system-level scaling (Windows Display settings or Mac Displays) when you have vision difficulties or straightforward prefer larger text everywhere — in menus, programs, and websites all at once.

System-level changes take effect across your entire computer and persist until you change them back. Browser zoom is per-website and resets only for that site. If you find yourself constantly zooming in on websites, a system-level increase might be more comfortable in the long run.

Keep in mind that very large system-level scaling (above 150%) can cause some older programs to display incorrectly or cut off text. If that happens, lower the scaling and use browser zoom for individual websites instead.

Frequently Asked Questions

Will changing font size on my computer affect printing?

Browser zoom does not affect printing — when you print a webpage, it prints at the original size, not the zoomed size. System-level scaling also does not change what prints. If you want to print text larger, change the font size in the document itself (in Word, Docs, or your email program) before printing.

Can I make text larger in PDFs?

Yes. Most PDF readers have a zoom control in the toolbar or menu. Adobe Reader, Preview (on Mac), and most browsers let you use Ctrl+Plus to enlarge a PDF. You can also right-click and look for zoom options. The change is temporary unless you save the PDF with the new zoom level.

Why does text look blurry after I change the font size?

If you're using a custom scaling percentage on Windows (not a preset like 125% or 150%), some programs may not render text sharply because they weren't designed for that specific zoom level. Try using one of the preset percentages instead, or lower the custom percentage slightly.

Does changing font size use more battery on a laptop?

No. Changing font size does not affect battery life. Scaling your display larger or smaller makes no meaningful difference to power consumption.

Can I set different font sizes for different user accounts on the same computer?

Yes. Each user account on Windows or Mac has its own display settings. When you log into your account, your font size and scaling preferences load automatically. Other users on the same computer can have different settings without affecting yours.