The Hanging Indent: What It Is, When to Use It, and How to Create One

You've probably seen it hundreds of times without knowing its name. In the reference list at the back of a research paper, the first line of each entry starts at the left margin. Every line after that is indented. That's a hanging indent — and it's a formatting requirement in APA, MLA, and Chicago style.

What Is a Hanging Indent?

A hanging indent is a paragraph format where the first line starts at the left margin and all following lines are indented. It's also called an outdent or reverse indent.

This is the opposite of a standard paragraph indent, where the first line is pushed in and the rest runs to the margin. In a hanging indent, the identifying element — an author's last name, a term, or a number — sits at the left edge. The rest of the text wraps neatly behind it.

The result is a clean, scannable list. A reader looking for "Giardina" in a bibliography can run their eye down the left edge of the page instead of reading line by line.

Hanging Indent vs. Standard Indent: What's the Difference?

Standard paragraph indent: First line is indented, all other lines run to the left margin. Used in body text paragraphs.
Hanging indent: First line runs to the left margin, all other lines are indented. Used in reference lists, bibliographies, works cited pages, and definition lists.

The most common mistake writers make with reference lists is applying a standard paragraph indent out of habit. This produces exactly the wrong effect and doesn't comply with any major style guide.

How to Create a Hanging Indent in Microsoft Word

There are two methods. Both produce the same result.

Method 1: Paragraph Settings

Select the text you want to format.
Right-click and select "Paragraph."
Under "Indentation," open the "Special" dropdown.
Select "Hanging."
Set the depth to 0.5 inches (the APA and MLA standard).
Click "OK."

Method 2: Using the Ruler

Make sure the ruler is visible. If not, click "View" and tick "Ruler."
Select the text you want to format.
On the ruler, drag the upper triangular marker (First Line Indent) to the left margin.
Drag the lower triangular marker (Left Indent) to the 0.5-inch mark.

How to Create a Hanging Indent in Google Docs

Select the text you want to format.
Click "Format" in the top menu.
Go to "Align and indent," then "Indentation options."
Under "Special indent," select "Hanging."
Set the depth to 0.5 inches.
Click "Apply."

How to Create a Hanging Indent in Other Platforms

InDesign: Set a positive left indent (e.g., 0.5 inches) and a negative first-line indent of the same value (e.g., -0.5 inches) in the paragraph style. These cancel each other out for the first line and indent all subsequent lines.
LaTeX: Use the \hangindent and \hangafter commands, or the hanging package for more convenient control.

Important: Never create the visual appearance of a hanging indent using spaces or manual line breaks. This looks correct on screen but breaks apart when the document is reformatted, exported, or printed. Always use the paragraph formatting tools.

Why Hanging Indents Matter

Reference lists are dense. When each entry starts the same way — with a flush block of text — the reader has to slow down and hunt for each new source. A hanging indent fixes this by pulling the lead element of each entry out to the left margin, creating a visual anchor for every source.

A reader scanning a bibliography for "Shackelford" can sweep down the left edge of the page. Without this format, they'd have to read through every line. For editors, professors, and peer reviewers working through long reference lists, this difference matters.

Hanging Indents in Academic Writing

All four major style guides require them in reference lists. Here are the specifications:

APA 7th edition: 0.5-inch indent for all entries in the reference list
MLA 9th edition: 0.5-inch indent for all entries in the Works Cited page
Chicago style: Required in the bibliography format (note: Chicago footnotes use a standard first-line indent, not a hanging indent)
Turabian: Follows Chicago bibliography conventions — hanging indent for all bibliography entries

Here is how an APA-style reference looks with the format applied. Notice how "Giardina" sits flush at the left margin while the wrapped lines indent inward:

Giardina, D. (1987). Storming heaven: A novel about the West Virginia coal wars and the struggles of working people in the Appalachian coalfields during the early twentieth century. Random House. https://www.worldcat.org/title/storming-heaven

In a properly formatted reference list, "Giardina" anchors the left edge. A reader scanning for this author finds the "G" entries without reading every line.

Here is a Chicago-style bibliography entry. The same principle applies:

Ingham, J. N. (1991). Making iron and steel: Independent mills in Pittsburgh, 1820–1920, and the transformation of the American steel industry in the Monongahela River valley. Ohio State University Press. https://doi.org/10.5555/example.doi.ingham1991

In a long bibliography on industrial history, the visual anchoring of each surname is the difference between a usable reference list and a wall of undifferentiated text.

Hanging Indents in Business Writing

Business writers encounter this format in reports with source citations, proposal reference lists, and glossaries. Here's an example from a business report on Appalachian economic development:

Pollard, K., & Jacobsen, L. A. (2020). The Appalachian region: A data overview from the 2014–2018 American Community Survey, including economic, demographic, and educational attainment indicators across the 423-county Appalachian region. Appalachian Regional Commission. https://www.arc.gov/report/the-appalachian-region-a-data-overview-from-the-2014-2018-american-community-survey/

This format is also used in glossaries and definition lists. Here's an example from a report on natural gas development in the Marcellus Shale region:

Hydraulic fracturing — A well-stimulation technique in which pressurized fluid is injected into a wellbore to create fractures in the surrounding rock formation, allowing oil or natural gas to flow more freely. Widely used in the Marcellus Shale region of Pennsylvania, West Virginia, and Ohio, it is one of the primary methods of natural gas extraction in the Appalachian Basin.

The term sits flush left in bold. The definition wraps beneath it with an indent. In a multi-page glossary, this makes navigation much faster than a plain block format.

Hanging Indents in Books

Book editors and designers have used this format for centuries. It appears in several places readers rarely notice consciously.

Indexes

In a book index, the main entry sits at the left margin and subentries are indented beneath it. The visual logic is identical: the primary term is the anchor, and supporting material wraps behind it.

Bibliographies and Endnotes

Nonfiction bibliographies follow the same conventions as academic writing. Here's an example from a book on the steel industry in Pittsburgh:

Warren, K. (2001). Big steel: The first century of the United States Steel Corporation, and its role in shaping the industrial economy of western Pennsylvania and the greater Pittsburgh region. University of Pittsburgh Press. https://www.uppress.pitt.edu/9780822941729/big-steel/

Glossaries

Glossaries in trade and reference books use this format to separate terms from definitions. The term is flush left; the definition wraps behind it with an indent. This makes any glossary fast to navigate regardless of length.

Plays and Screenplays

Plays and screenplays use a related concept: character names are set apart visually from dialogue so the speaker is always instantly identifiable. The underlying principle is the same — make the identifying element stand out.

Common Mistakes to Avoid

Using a standard paragraph indent instead. The most frequent error. This produces the wrong visual effect and doesn't comply with any major style guide.
Mixing formats in the same list. Every entry in a bibliography or reference list should use the same format throughout. Inconsistency signals a lack of attention to detail.
Using an inconsistent indent depth. APA and MLA both specify 0.5 inches. Verify this throughout the document.
Faking it with spaces or line breaks. This looks correct on screen but breaks apart when the document is reformatted, exported, or printed. Always use the paragraph formatting tools.

Frequently Asked Questions

What is a hanging indent?

A paragraph format where the first line starts at the left margin and all following lines are indented. Also called an outdent or reverse indent. It's required in APA, MLA, Chicago, and Turabian reference lists and bibliographies.

What's the difference between a hanging indent and a regular indent?

In a regular indent, the first line is indented and all other lines run to the left margin. In a hanging indent, it's the reverse: the first line runs to the left margin and all other lines are indented. Regular indents are used in body text. Hanging indents are used in reference lists and bibliographies.

How do you create a hanging indent in Word?

Select the text, right-click, open the Paragraph dialog, set the "Special" dropdown to "Hanging," and enter 0.5 inches as the depth. Click "OK."

How do you create a hanging indent in Google Docs?

Select the text, go to Format, then "Align and indent," then "Indentation options." Under "Special indent," select "Hanging" and enter 0.5 inches. Click "Apply."

Do all style guides require a hanging indent for references?

Yes. APA 7th edition, MLA 9th edition, Chicago style, and Turabian all require them in reference lists, works cited pages, and bibliographies. The standard depth in APA and MLA is 0.5 inches. For academic writers, this is a requirement, not a stylistic preference.