How To Adjust Font Size In Outlook

Adjusting font size in Outlook makes your emails easier to read and compose. This guide explains how to change the default font size for new messages, replies, and forwards, as well as how to increase the text size in your reading pane and even scale the entire Outlook interface. Following these simple steps will ensure your Outlook experience is comfortable and personalised, whether you're sending an important email or reviewing your inbox.

Fast Answer

Set default font for new emails: Go to File > Options > Mail > Stationery and Fonts > Personal Stationery > New mail messages > Font.

5-10 minutes Time needed

Easy Difficulty

Applying changes only to one area Watch out for

Before You Start

An active Microsoft Outlook installation on your computer.
Ensure Outlook is open and you are logged into your account.
Identify whether you want to change font size for composing emails, reading emails, or the overall Outlook display.

Check first: Understand that there are different font size settings in Outlook for various areas. A change in one place (e.g., new emails) may not affect another (e.g., reading pane), so be specific about what you wish to adjust.

Step-by-Step Instructions

Step 1: Set Default Font Size for New Messages

This is the most common adjustment and affects all new emails you compose. It will not change the font size of emails you receive or replies you send.

Open Outlook on your computer.
Click on the File tab in the top-left corner of the Outlook window.
From the File menu, select Options at the very bottom of the left-hand pane. This will open the 'Outlook Options' dialogue box.
In the 'Outlook Options' window, click on Mail in the left-hand navigation pane.
Under the 'Compose messages' section, find and click the Stationery and Fonts... button. This opens the 'Signatures and Stationery' window.
Under the 'Personal Stationery' tab, locate the 'New mail messages' section. Click the Font... button.
The 'Font' dialogue box will appear. Here you can choose your desired Font, Font style (e.g., Regular, Italic, Bold), and most importantly, the Size. Select a size that is comfortable for you, such as 12 or 14.
Click OK to confirm your font choices in the 'Font' dialogue box.
Click OK again in the 'Signatures and Stationery' window.
Finally, click OK in the 'Outlook Options' window to apply all changes.

Tip: You can see a preview of your chosen font and size in the 'Font' dialogue box before confirming, helping you decide if it's right for you.

Step 2: Adjust Font Size for Replies and Forwards

If you want to change the font size specifically for emails you reply to or forward, the process is very similar to setting the font for new messages.

Follow steps 1-5 from 'Step 1: Set Default Font Size for New Messages' to reach the 'Signatures and Stationery' window (File > Options > Mail > Stationery and Fonts...).
In the 'Signatures and Stationery' window, under the 'Personal Stationery' tab, find the 'Replying or forwarding messages' section.
Click the Font... button next to this section.
In the 'Font' dialogue box that appears, select your preferred Font, Font style, and Size for replies and forwards.
Click OK to confirm your choices in the 'Font' dialogue box.
Click OK again in the 'Signatures and Stationery' window.
Click OK in the 'Outlook Options' window to save all your changes.

Watch out: If you often reply to emails, making these changes separately ensures your responses are consistently legible, even if the original message had a different font size.

Step 3: Temporarily Zoom the Reading Pane Font Size

This method allows you to quickly adjust the text size of an email you are currently reading without changing any default settings. It's a temporary zoom for the active email.

Open an email in the Reading Pane or in its own separate window.
To zoom in: Hold down the Ctrl key on your keyboard and scroll your mouse wheel upwards.
To zoom out: Hold down the Ctrl key and scroll your mouse wheel downwards.
Alternatively, when an email is open in its own window, look for the Zoom slider in the bottom-right corner of the window. Click on the percentage (e.g., 100%) to open a 'Zoom' dialogue box where you can select a fixed zoom level or enter a custom percentage.
Click OK in the 'Zoom' dialogue box to apply.

Tip: This quick zoom only affects the email you are viewing right now. The next time you open a different email, it will revert to the default reading pane size.

Step 4: Permanently Adjust Reading Pane Font Size (List View)

This method changes the font size of the email subject, sender, and date in your message list, as well as the text within the Reading Pane itself, making it a more lasting solution than the temporary zoom.

In the main Outlook window, click on the View tab in the ribbon at the top.
In the 'Current View' group, click on View Settings. This will open the 'Advanced View Settings' dialogue box.
Click on the Other Settings... button.
In the 'Other Settings' dialogue box, you'll see options for 'Column Font' (for the message list columns) and 'Row Font' (for the message list rows). The 'Message preview' option also affects the reading pane.
To change the font for the message list (sender, subject, date): Click the Font... button next to 'Column Font' or 'Row Font', select your desired Size, then click OK.
To change the font size in the reading pane (for received messages): Click the Font... button next to 'Message preview'. Select your preferred Size and click OK. Note: this applies to the first few lines of the email in the preview.
Click OK in the 'Other Settings' dialogue box.
Click OK in the 'Advanced View Settings' dialogue box.
The changes should apply immediately to your message list and reading pane.

Tip: If you primarily use the reading pane for reviewing emails, adjusting the 'Message preview' font is crucial for long-term comfort.

Step 5: Scale the Entire Outlook Interface (System-Wide Zoom)

If you find that not only the email text but also the menu bars, buttons, and overall Outlook interface are too small, you might need to adjust your Windows display settings. This will affect all applications, not just Outlook.

Minimize Outlook and any other open applications to get to your desktop.
Right-click anywhere on an empty part of your desktop.
Select Display settings from the context menu. This will open the Windows 'Settings' application to the 'Display' section.
Under the 'Scale & layout' section, find the 'Change the size of text, apps, and other items' drop-down menu.
Click on the drop-down and choose a larger percentage, such as 125% or 150%.
Windows may ask you to sign out and back in for some changes to take full effect.
Once applied, reopen Outlook. You should see that everything – text, icons, menus – has scaled up.

Watch out: Changing this setting affects *all* applications on your computer, not just Outlook. If other programmes look too big, you may need to find a balance or use application-specific zoom features where available.

Step 6: Adjust Font Size While Composing a Single Email

Sometimes you might need to change the font size for only a specific part of an email you are currently writing, overriding your default settings for that message.

Open a new email, reply, or forward in Outlook.
Type the text you wish to modify.
Highlight the specific text by clicking and dragging your mouse over it.
Look for the 'Format Text' tab in the ribbon at the top of the message window (it usually appears automatically when composing an email).
In the 'Font' group on the 'Format Text' tab, you'll see a drop-down menu with numbers representing font sizes. Click this menu and select a new size, such as 16 or 18.
The highlighted text will immediately change to the new size.
You can also use the 'Grow Font' (capital A with an up arrow) and 'Shrink Font' (capital A with a down arrow) buttons next to the size selector to adjust the size incrementally.

Tip: This is useful for making specific words or phrases stand out in your email, like a heading or a crucial piece of information.

Quick Reference

Situation	Use this	Why
Default font for all new emails	File > Options > Mail > Stationery and Fonts > New mail messages > Font	Ensures consistent legibility for your outgoing messages.
Default font for replies/forwards	File > Options > Mail > Stationery and Fonts > Replying or forwarding messages > Font	Maintains your preferred text size when responding to others.
Temporary zoom for current email	Hold Ctrl and scroll mouse wheel (or use Zoom slider)	Quickly enlarges or shrinks text for easy reading of a single message without altering settings.
Permanent font for message list/reading pane	View tab > View Settings > Other Settings > Row Font / Message preview Font	Sets a consistent, comfortable size for viewing received emails and the message list.
Entire Outlook interface is too small	Windows Display settings > Scale & layout > Change the size of text, apps, and other items	Enlarges all elements of Outlook and other applications for overall system accessibility.
Change font size for specific text in one email	Highlight text in message > Format Text tab > Font Size drop-down	Allows for custom formatting within a single email, for emphasis or clarity.

Common Problems When You Adjust Font Size In Outlook

Even with clear instructions, you might encounter a few hiccups when trying to adjust font sizes in Outlook. Here are some common issues and how to troubleshoot them.

Problem: Changes Only Affect New Emails, Not Replies

You've adjusted the font size, but when you reply to an email, the text is still tiny (or too large).

Fix: Remember that Outlook has separate settings for new messages and for replies/forwards. You need to adjust both. Go to File > Options > Mail > Stationery and Fonts... and make sure you've clicked the Font... button under 'Replying or forwarding messages' and set your desired size there, in addition to the 'New mail messages' setting.

Problem: Reading Pane Font Doesn't Stay Changed

You used Ctrl + mouse wheel to zoom in on an email, but the next email you open is back to the smaller size.

Fix: The Ctrl + mouse wheel method is for temporary zoom only. For a permanent change to the reading pane's display font, you need to go through View tab > View Settings > Other Settings... and adjust the font for 'Message preview'. This sets a lasting size for how emails appear in your list view and reading pane.

Problem: Outlook Interface (Menus, Buttons) is Still Too Small

Even after changing email and reading pane fonts, the rest of Outlook (ribbon, navigation pane, account names) remains difficult to see.

Fix: This indicates that the overall scaling of your Windows display is too low. The solution is to adjust the system-wide display settings, not just Outlook's internal font settings. Right-click on your desktop, select Display settings, and increase the 'Change the size of text, apps, and other items' percentage (e.g., from 100% to 125%). This will scale up the entire user interface for all applications, including Outlook.

Problem: Font Size Changes Are Not Taking Effect

You've gone through the steps, clicked 'OK' multiple times, but nothing seems to change.

Fix: First, ensure you've clicked OK in *all* the open dialogue boxes (Font, Signatures and Stationery, Outlook Options) to save your changes. Sometimes, Outlook needs a restart to fully apply certain display settings. Try closing Outlook completely and then reopening it. If the issue persists, double-check that you're modifying the correct setting for the specific area you want to change (e.g., new mails vs. replies vs. reading pane).

Advanced Tips for How To Adjust Font Size In Outlook

Beyond the basic adjustments, there are several ways to further optimise your Outlook experience for comfort and readability. These tips can help you fine-tune settings or consider broader accessibility options.

Use Outlook Themes and Stationery: While not directly about font size, Outlook's themes and stationery (found next to the font settings in File > Options > Mail > Stationery and Fonts...) can influence the overall visual presentation of your emails. Choosing a theme with good contrast or simpler styling can sometimes improve readability even without significant font size changes. You can customise stationery to include specific fonts and sizes that are applied automatically.
Explore Accessibility Options in Windows: If you have broader visual needs, Windows itself offers powerful accessibility tools. Beyond just scaling text, you can enable a 'Magnifier' (Windows key + Plus sign (+)) to zoom into specific parts of your screen, or adjust high contrast themes. These system-level features can dramatically improve usability across all applications, including Outlook.
Customise Ribbon and Quick Access Toolbar: If you frequently change font sizes for individual messages, consider adding the 'Font Size' or 'Grow Font'/'Shrink Font' commands to your Quick Access Toolbar (the small bar above the ribbon) or even creating a custom group in your ribbon. This makes these tools instantly accessible without needing to navigate through menus. Right-click the ribbon, select 'Customise the Ribbon...' or 'Customise Quick Access Toolbar...' to do this.
Understand Font Embedding (for recipients): When you send an email, the recipient's computer will display it using the fonts they have installed. If you use a very unusual font, the recipient's system might substitute it, potentially changing the appearance or size. To ensure your email always looks as intended, stick to common, web-safe fonts like Arial, Calibri, or Times New Roman, especially for professional communications.
Regularly Review Settings: Software updates or new computer setups can sometimes reset or alter personal preferences. It's a good practice to periodically review your Outlook font settings, especially after major system updates, to ensure they are still configured to your comfort.

How To Adjust Font Size In Outlook FAQ

Q: Can I change the font size for only one specific email I receive?

A: Yes, temporarily. While viewing an email in the reading pane or its own window, hold down the Ctrl key and scroll your mouse wheel up or down. This will zoom the text for that particular email. It won't save this setting for other emails or change your default view.

Q: Why does my signature font look different after I change my default font size?

A: Your email signature often has its own font and size settings, defined when you created it. Changing the default font for new messages won't automatically update your signature. You'll need to edit your signature separately. Go to File > Options > Mail > Signatures..., select your signature, and adjust its font and size within the editor.

Q: How do I make the list of emails (subject, sender) bigger?

A: To make the message list entries larger, go to the View tab, then click View Settings > Other Settings.... In this dialogue box, you can adjust the Font... for 'Column Font' and 'Row Font' to increase the size of the text displaying the sender, subject, and date.

Q: Will changing the font size in Outlook affect how recipients see my emails?

A: When you set a default font and size for new emails, that's what Outlook *sends*. Most modern email clients will respect these settings. However, recipients can always choose to override your font settings on their end (e.g., by zooming in or out) or if they have their own default display preferences set. Sticking to common fonts like Arial, Calibri, or Times New Roman ensures maximum compatibility.

Q: I changed my display settings in Windows, but Outlook still looks small. What's wrong?

A: After changing Windows display scaling, some applications might need to be restarted to fully adopt the new settings. Close Outlook completely (ensure it's not just minimised to the system tray) and then reopen it. If the issue persists, try restarting your computer. Also, ensure your Windows display scaling is set to a percentage higher than 100%.

Q: Can I set different default font sizes for different email accounts in Outlook?

A: No, Outlook's default font settings for new messages, replies, and forwards are generally applied globally to the Outlook application, not on a per-account basis within the 'Stationery and Fonts' section. However, you can manually select a different font/size when composing an email from a specific account, or use separate signatures with unique styling for each account.

Final Checklist for How To Adjust Font Size In Outlook

Before you consider your font adjustments complete, run through this quick checklist to ensure everything is set up exactly as you need it.

Did you change the font size for new messages? (File > Options > Mail > Stationery and Fonts > New mail messages)
Did you change the font size for replies and forwards? (File > Options > Mail > Stationery and Fonts > Replying or forwarding messages)
Is the reading pane font size comfortable for reading received emails? (View tab > View Settings > Other Settings > Message preview Font)
Is the overall Outlook interface (menus, ribbon) a suitable size, or do you need to adjust Windows display settings?
Have you clicked OK in all relevant dialogue boxes to save your changes?
Did you restart Outlook if any major display changes didn't immediately take effect?
Have you checked how your changes appear by composing a new email and replying to an existing one?
If you use an email signature, have you checked its appearance and adjusted it separately if needed?

By carefully following these steps and checks, you can achieve an Outlook experience that is perfectly tailored to your visual preferences, making your daily email tasks much more comfortable and efficient.