Standard Manuscript Format, explained

Last updated August 2026

Standard manuscript format is the layout agents, editors and competition readers expect when you send them prose. It is not a house style and it is not a design choice. It exists so that a stack of submissions from a hundred different writers can be read, marked up and estimated at a glance.

Most of it dates from typewriters and paper. A few of the rules have quietly stopped mattering. This is what the format is, and which parts still earn their place.

The core rules

Why the odd ones exist

Double spacing is not padding. It is where the reader writes. A line edit lives in the gap between two lines of your prose, and a single-spaced manuscript leaves nowhere to put it.

A monospaced font makes every character the same width, which is what makes a page count mean something. Editors historically estimated a book's length from its page count, and that estimate only works if everyone's page holds roughly the same number of characters.

Ragged right, never justified. Justification stretches the spaces between words to force a straight right edge. On screen that looks tidy; in a manuscript it hides the thing a copy editor is scanning for, which is where words actually begin and end.

Chapter starts a third of the way down leaves white space for notes about the chapter as a whole, rather than about any line in it.

The # for a scene break exists because a blank line disappears. If a scene break falls at the foot of a page, a reader cannot tell whether the whitespace is a break or the end of the page. A visible mark cannot be lost that way.

What has stopped mattering

Courier specifically. Times New Roman is accepted nearly everywhere now. Unless the submission guidelines name a font, either is safe. What still matters is that it is 12pt and consistent.

Underlining for italics. Typewriters could not set italic type, so writers underlined and typesetters converted it. Word processors can set italics, so set italics.

Two spaces after a full stop. A typewriter artefact that proportional fonts handle on their own. One space.

Word count on the title page, rounded to the nearest thousand. Still expected by some, but many now read it straight off the file. Include it if the guidelines ask; do not agonise over it.

The rule that overrides all of this

Follow the submission guidelines you were given. If an agent asks for single-spaced, or a specific font, or the first fifty pages pasted into the body of an email, do exactly that. Standard manuscript format is the default when nobody has told you otherwise — it is not a standard that outranks the person reading your book.

The most common way to fail a submission on formatting is not getting the margins wrong. It is ignoring an explicit instruction because you had read that standard format required something else.

Common mistakes

• Indenting with spaces or with the space bar. Use a first-line indent or a tab stop. Manual spaces shift the moment the font changes and are visible to anyone who turns on formatting marks.
• A blank line between paragraphs as well as an indent. Pick one; in prose it is the indent.
• Putting the header on the first page. The title page or first page carries your contact details; the running header starts on the page after.
• Fancy chapter headings. Design happens at typesetting. A manuscript with decorative headers reads as someone solving the wrong problem.
• Exporting to PDF when DOCX was asked for. PDFs are hard to mark up. Send the format requested.

Getting it right without thinking about it

Every rule above is a setting you can forget once, and then get wrong for eighty thousand words.

Write Flow Studio applies standard manuscript format as you type, with accurate pagination — so the page count you see is the page count a reader gets — and exports to DOCX and PDF with the formatting already correct. Chapters start on a new page, headers carry your surname and title, scene breaks are marked properly, and none of it is something you have to remember.