Docs tower · floor

How to change margins in Word, and whether you need to

Most people looking up how to change margins in word are doing it because a brief specified one-inch margins. There is a fact worth knowing before you touch anything, and Microsoft states it in the first line of its own page.

“In Word, each page automatically has a one-inch margin.”

Microsoft’s own documentation, read 22 August 2026. Worth knowing before you change anything, because a large share of the searches around this question are for “one inch margins” — and if nobody has altered the document, you already have them. The useful first move is to check rather than to set.

So the honest first step is Layout → Margins, reading what is currently selected, and changing nothing if it already says Normal. A document that has been through a template, a colleague or a download may have been altered; one you started yourself almost certainly has not.

Changing them, when you do need to

Microsoft’s instructions, which are two steps.

  1. “Select Layout → Margins.”
  2. “Select the margin configuration you want, or select Custom Margins to define your own margins.”

The predefined options are worth understanding rather than guessing at. Normal is the one-inch default. Narrow is half an inch all round, which fits more on a page and is precisely what an academic brief is trying to prevent. Moderate and Wide sit either side of Normal. If a requirement names a number, use Custom Margins and type it rather than hunting for a preset that happens to match.

The one case where a wider left margin is wrong

APA sets the requirement and names the exception in the same breath: “Use 1-inch margins on every side of the page for an APA Style paper. However, if you are writing a dissertation or thesis, your advisor or institution may specify different margins (e.g., a 1.5-inch left margin to accommodate binding).”

The instinct is to set the left margin to 1.5 inches. For a single-sided document that works. For anything printed double-sided it does not, because the binding edge alternates — left on odd pages, right on even — and a fixed left margin puts the extra space on the wrong side of half the document.

Word has a separate setting for exactly this. Microsoft lists it among what the margins dialog does: “allow extra margin space to allow for document binding”, alongside setting “margins for facing pages”. That is the gutter, and it is the correct tool — it adds space at the bound edge wherever that edge happens to be.

Margins for part of a document only. Word applies margins to a section, so changing them affects everything unless you have created a section break first — the same mechanism behind page numbering and headers. If you need one landscape page in a portrait document, or wider margins for an appendix, the section break comes first and the margin change second. The page-numbering floor in this tower covers how to see whether the break you think you made actually exists.

What margins are not for. Two habits produce documents that fall apart later. Making margins wider to create space at the top of a page, rather than using a page break or spacing — that space then appears on every page in the section. And making margins narrower to fit a page limit, which reviewers notice immediately and which most briefs specify precisely in order to prevent.

If your brief names a different style. The one-inch figure quoted here is APA’s, from APA. MLA and Chicago publish their own requirements, and a thesis will usually have institutional rules that override all of them — APA says so itself in the sentence quoted above. Where a number matters, it is worth reading from the document that will be used to mark you.

The default and the steps here are quoted from Microsoft’s support documentation and the margin requirement from APA Style, each read on 22 August 2026. The explanation of why a fixed left margin fails on double-sided printing is ours.

Where to start

Four ways in.

“The brief says one-inch margins.”
You probably already have them — then see the rest of the formatting
“I am binding or printing it.”
That is the red box — printing and binding
“Only part of the document should change.”
Section breaks — go to sections and breaks
“I am not using Word.”
See other editors

The rest of the formatting

Margins are one of four or five requirements marked together, and the others break in the same way.

Double spacing in WordTwo routes from Microsoft, and the paragraph setting that makes a correctly spaced document still fail.Open this floor → Hanging indentsFive steps from Microsoft, and the exact depth APA publishes for a reference list.Open this floor → Page numbersThree different cases with three different answers, and the button that makes them all fail.Open this floor →

Sections and breaks

Margins apply to a section. Almost every “it changed the whole document” problem is a missing section break.

Deleting a page in WordThe blank page that will not go away, and what is actually causing it.Open this floor → Combining Word documentsThe built-in feature hidden behind a small arrow, and why headers break at the join.Open this floor → Table of contents in WordThe automatic one, which also fixes your headings.Open this floor →

Printing and binding

A document that will be printed double-sided or bound has requirements a screen document does not.

Word to PDFExporting the finished thing without a converter site.Open this floor → Compressing a PDFWhat gets smaller, and what quality it costs.Open this floor → Scanning documents with a phoneTurning paper back into a file that is actually readable later.Open this floor →

Other editors

The same setting exists everywhere, and the same distinction between a margin and a gutter comes with it.

Google Docs marginsThe same job in the other common editor.Open this floor → Word processors without the cloudWhat still works entirely on your own machine, and what it costs.Open this floor → How to write a bibliographyThe three lists have different names for a reason, and two style bodies define the difference.Open this floor →

What this tower will not do

It will not tell you to set one-inch margins without checking. Word’s default already is one inch, and Microsoft says so on its own page.

It will not suggest widening the left margin for binding. That fails on double-sided printing, and Word has a separate setting for the job.

And it will not narrow margins to fit a page limit, which is what the limit exists to prevent. What holds instead is simple: the default and the steps are quoted from Microsoft’s support documentation and the margin requirement from APA Style, each with the date it was read.

Where this page got its facts

  1. Microsoft Support — Change margins, including the one-inch default, Custom Margins, facing pages and extra space for binding — support.microsoft.com, read 22 August 2026.
  2. APA Style — Margins, on one-inch margins on every side and the exception for a dissertation or thesis — apastyle.apa.org, read 22 August 2026.

Written by Alberto Gulotta

Founder and editor of AI Tools Primer, writing from Palermo, Italy. Thirty-five years of taking computers apart, starting with a Commodore 64 — the long version is on the about page.

Something wrong on this page? Write to aitoolsprimer@gmail.com and it gets fixed.

Written on 22 August 2026.

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