Office for Mac Issues

How to Add a Horizontal Separator Line in OneNote for Mac

Maira Mehtab Sep 21, 2026 868 views

Question details

The user wants to know how to insert a horizontal separator line or visual divider to organize notes in Microsoft OneNote for Mac.

Product: Microsoft OneNote
Device & OS: Mac
Scenario: Formatting and visually organizing notes on a page.
Observed behavior: OneNote for Mac does not currently provide a built-in option or dedicated tool to insert a horizontal line, forcing users to seek workarounds.

Before you start

Since OneNote for Mac lacks a native horizontal line tool, make sure your application is updated to the latest version in case Microsoft releases the feature, and prepare to use your keyboard for basic formatting workarounds.

Solution 1Recommended

Use Repeated Keyboard Characters

Create a makeshift horizontal line by typing a continuous sequence of dashes or underscores.

This is the quickest and most common workaround for visually dividing content when a native line tool is unavailable.

Position your cursor

Click exactly where you want the horizontal separator line to appear in your OneNote page.

Type characters

Type a continuous sequence of dashes (---), underscores (___), or equal signs (===) across the screen until it reaches your preferred width.

Continue taking notes

Press the 'Return' key to move to the next line and continue typing the rest of your notes below the new separator.

Submit Feature Feedback: Because the native line feature is missing, consider submitting or voting for this request on the official Microsoft Feedback Portal to encourage future updates.

Solution 2

Insert a Single-Cell Table

Use a one-cell table with a customized shape to act as a structured divider.

Solution 3

Copy and Paste a Line from Another App

Draw a line in a different document editor or image tool and paste it directly into your OneNote page.

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Frequently Asked Questions

Will Microsoft add a native horizontal line tool to OneNote for Mac?

While the feature has been heavily requested by the community on the Microsoft Feedback Portal, Microsoft has not yet provided an official timeline for when or if a built-in horizontal line tool will be added to the Mac version of OneNote.

Can I use auto-format to create a line by typing three dashes?

No. Unlike Microsoft Word or WPS Writer, where typing three consecutive dashes and pressing Enter automatically formats them into a solid line, OneNote for Mac does not support this auto-format shortcut. You must type the dashes manually across the entire width.

Are there third-party add-ins for Mac that can draw lines in OneNote?

Currently, OneNote for Mac has very limited support for third-party add-ins and macros compared to its Windows counterpart (such as Onetastic). Relying on external plugins to draw horizontal lines is not a viable option for Mac users at this time.

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