How to Extend Horizontal Line in Google Docs [A 2026 Guide]

When I first started using Google Docs for creating clean, organized documents—especially creating ebooks, guides, and worksheets—I often found myself wanting to add horizontal lines to separate sections. 

But here’s the thing: the built-in Insert > Horizontal Line feature in Google Docs only gives you a fixed-length line, which doesn’t always stretch across the full page or give you much control.

If you’ve been wondering how to extend horizontal line in Google Docs, you’re not alone.

In this tutorial, I’ll walk you through both how to add a standard horizontal line and how to create extended or custom-length horizontal lines that look cleaner and more professional. Let’s get started!

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Method 1: Insert a Standard Horizontal Line (the Basic Way)

Google Docs provides a quick way to insert a horizontal line using the built-in menu. Here’s how:

Step-by-Step:

1. Open your Google Docs document.
2. Place your cursor where you want to insert the horizontal line.
3. Go to the Insert menu.
4. Select Horizontal line from the dropdown.

Result: A horizontal line appears in your document.

But here’s the catch:

This line has a fixed length. You can’t adjust its width, thickness, or alignment. That’s fine for quick use, but if you're like me and want to design cleaner, full-width layouts—this won’t cut it.

So let’s talk about the better methods.

Method 2: Extend Horizontal Line Using Underline/Hyphens

When I was formatting my first ebook in Google Docs, I discovered this simple workaround: you can manually create an extended line using the underscore key or hyphen key on your keyboard.

Step-by-Step (Using Underscore _):

1. Click where you want your line.
2. Hold down the Shift key and press the hyphen - key repeatedly.
3. Keep pressing until the line reaches your desired length.

Example:
______________________________________________________________________________________

This creates a full-width line across your document!

Pro Tip: If you want the line to look bolder, use equals signs = instead.

Example:
======================================================================================

Method 3: Use Drawing to Extend Horizontal Line in Google Docs

Here’s a method I stumbled upon when I needed more design freedom—especially for ebooks and lead magnets. Google Docs allows you to insert a custom-drawn horizontal line using its Drawing tool.

Step-by-Step:

1. Place your cursor where you want the line.
2. Go to Insert > Drawing > + New.
3. In the Drawing pop-up window:
   1. Click on the Line tool (the diagonal line icon).
   2. Draw a horizontal line by clicking and dragging.
4. After drawing:
   1. You can adjust the length, change the line weight (thickness), color, or even add arrows at the ends.
5. Once done, click Save and Close.
6. The line will appear as an image in your document.

Bonus Tip: You can click the image later and resize it, or edit it anytime by clicking on it and choosing Edit.

This is one of the most flexible methods I use when I need a precisely styled line, especially for digital PDFs or workbook designs I create on Google Docs.

Method 4: Create a Custom Horizontal Line with a Table

This method is another go-to for me when I want something neat, adjustable, and consistent.

Step-by-Step:

1. Click where you want the line.
2. Go to Insert > Table > 1x1.
3. A small table cell will appear. Drag the edges to make it full width.
4. Click inside the cell, then right-click and choose Table properties.
5. In the sidebar or popup:

• Set Table border to 0pt (to remove the outer border).
• Go to Cell settings and add a Bottom border only.
• Set the Bottom border thickness (e.g., 1pt, 2pt).
• Change the color if needed.

Result: A clean, full-width horizontal line that you can resize, color, and control.

I love this trick when formatting professional reports or sales documents—it gives you maximum control without any coding.

Bonus: Create a Double or Styled Horizontal Line

Want to get creative? Try these:

1. Use two underscore or equals lines one after another.

   Example:
   ________________________________________________________________________________
________________________________________________________________________________

2. Or mix characters for styling:

   • Dashes: ----------------------------------------------------------------------

   • Stars: ************************************************************************

   • Tildes: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

This is perfect for fun layouts like planners, newsletters, or digital journals.

Wrapping Up

Adding and extending a horizontal line in Google Docs isn’t complicated once you know the workarounds.

While the default method is limited, the alternatives—especially using the Drawing tool, the Table trick, or keyboard lines—give you plenty of flexibility.

Personally, I switch between the table method and drawing tool depending on the design needs.

Whether you’re making ebooks, worksheets, resumes, or stylish templates, these tips will help you polish your layout in no time.