If you have ever submitted a manuscript to a publisher or literary agent, you have been told to double-space it. But pick up any published novel, and the text is single-spaced. So which is it? Are books double-spaced or single-spaced, and why does one rule apply to manuscripts and another to finished books?
This is one of the most common points of confusion for new authors, and the answer is straightforward once you understand why the two different spacing standards exist. This guide explains the difference between double-spaced and single-spaced text, when each is used, and how books are actually formatted for publication.
Double Spaced vs Single Spaced: The Basic Difference
What Does Double Spacing Mean?
The Technical Definition
Double-spaced text means there is a full blank line between each line of text. In Microsoft Word and Google Docs, double spacing is set to 2.0 line spacing. This creates significant white space between lines and makes text visually open and easy to annotate.
Why Double Spacing Exists
Double spacing was developed for the publishing and editing workflow long before digital documents existed. Typewritten manuscripts were double-spaced so that editors could write notes, corrections, and queries between the lines. The convention carried forward into the digital era because the workflow remained the same.
What Does Single-Spaced Mean?
The Technical Definition
Single-spaced text means lines follow each other with only the minimal default spacing between them. In most word processors, single spacing is set to 1.0 line spacing. This is how most everyday documents, such as letters, reports, and web content, are formatted.
Why Single Spacing Is Used in Published Books
Published books use single spacing or something very close to it because the goal is different from a working manuscript. A finished book prioritizes readability for the reader, not editability for the editor. Publishers and typesetters use precise leading, the typographic term for line spacing, that is calibrated for the specific typeface, size, and trim size of the book.
Are Books Double-Spaced or Single-Spaced?
The Manuscript Standard
What Publishers and Agents Expect
When submitting to publishers, literary agents, or writing competitions, manuscripts are almost universally expected to be double-spaced. This is the industry standard for working documents. Submitting a single-spaced manuscript signals that the author does not understand professional submission conventions.
Standard Manuscript Format
- 12-point Times New Roman or Courier font
- Double spacing throughout at 2.0 line spacing
- One-inch margins on all sides
- First line of each paragraph indented 0.5 inches
- No extra space between paragraphs
- Page numbers in the header
- Author name and title in the header
The Published Book Standard
How Finished Books Are Spaced
Published books are not double-spaced. They use what typographers call single spacing with appropriate leading, typically 120 to 145 percent of the font size. For a 12-point font, this means approximately 14.4 to 17.4 points of leading. This is slightly more than true single spacing but significantly less than double spacing.
Why It Looks Different from Your Manuscript
A professionally typeset book looks different from your word-processor document because publishers use professional layout software, typically Adobe InDesign, with precise control over typography, kerning, tracking, and leading. The result is text that feels comfortable and readable in a way that word-processor output rarely matches.
Double Spaced or Single Spaced: When to Use Each
| Situation | Correct Spacing | Why |
| Manuscript submission to an agent or publisher | Double-spaced (2.0) | Industry standard: allows editorial markup |
| Writing competition submission | Double-spaced unless otherwise specified | Follow submission guidelines exactly |
| Finished published book interior | Single-spaced with professional leading | Optimized for reader experience |
| Self-published book interior | Single-spaced with professional leading | Match published book conventions |
| Academic paper | Double-spaced (check style guide) | APA and MLA require double spacing |
| Ebook | Not applicable: text reflows | Ebook readers control their own spacing |
How Self-Published Books Should Be Formatted
Matching Professional Standards
Interior Layout for Print
Self-published books should match the interior formatting conventions of traditionally published books. This means single spacing with appropriate leading, a carefully chosen body font, proper margins for the trim size, and consistent chapter heading design. Books formatted to look like word-processor output rather than professionally typeset books are immediately recognizable and signal lower production quality to readers.
Recommended Body Fonts for Book Interiors
- Garamond: elegant, highly readable, widely used in literary fiction
- Palatino: warm and classic, works well for nonfiction
- Times New Roman: functional but slightly dated, acceptable for self-publishing
- Caslon: traditional book font with excellent readability
- Minion Pro: professional standard used by many publishers
Ebook Formatting Considerations
Why Ebook Spacing Is Different
Ebooks use reflowable text, meaning the text adjusts to the screen size, font size preference, and device settings of each reader. Fixed spacing decisions you make in your formatting file may be overridden by reader preferences. The focus in ebook formatting is on clean structure rather than precise typographic control.
What Matters in Ebook Formatting
For ebooks, the key formatting considerations are a linked table of contents, clean paragraph styling without manual spacing hacks, properly embedded images at correct resolution, and a correctly structured EPUB file that renders consistently across major reading devices and apps.
Common Formatting Mistakes Authors Make
| Mistake | What It Signals | How to Fix It |
| Single spacing a submission manuscript | Unfamiliarity with industry conventions | Use 2.0 line spacing for all submissions |
| Double spacing a finished book interior | Amateur production quality | Use professional single spacing with proper leading |
| Using Arial or Calibri for book body text | Word processor defaults, not book design | Switch to a serif book font |
| Extra line breaks between paragraphs | Word processor habit, not book convention | Use first-line indent with no extra spacing |
| Inconsistent chapter heading formatting | Lack of professional formatting | Use consistent, styled headings throughout |
Final Thoughts
The question of whether books are double spaced or single spaced has a clear answer once you understand the context. Manuscripts submitted to agents and publishers are double spaced. That is the professional standard for working documents. Published books, whether traditionally or self-published, use single spacing with professional leading calibrated for readability.
Getting this right signals that you understand publishing conventions. Getting it wrong signals that you do not, and in a competitive industry, those signals matter.
Fable Publishers helps authors produce books that meet professional publishing standards from the inside out. If you need support with your book’s formatting and production, reach out to us today. We will make sure your book looks as good as it reads.
FAQs
1. Are books double spaced or single spaced when published?
Published books are single spaced with professional typographic leading that makes text comfortable to read. Double spacing is the standard for manuscript submissions to agents and publishers, not for finished published books.
2. Why do agents and publishers require double-spaced manuscripts?
Double spacing creates space for editorial notes, corrections, and queries between lines of text. This convention developed during the typewriter era and has persisted because the editing workflow still benefits from that space, even in digital documents.
3. What spacing should a self-published book use?
A self-published book should use single spacing with professional typographic leading, set in layout software like Adobe InDesign or formatting tools like Vellum or Atticus. The goal is to match the interior appearance of traditionally published books.
4. Does spacing matter in ebooks?
Ebook spacing is less fixed than print spacing because readers can adjust font size and spacing through their reading app. The focus in ebook formatting should be on clean structure and correctly structured paragraph styling rather than precise spacing control.
5. What font should I use for my book’s interior?
For print book interiors, serif fonts designed for extended reading are the professional standard. Garamond, Palatino, Caslon, and Minion Pro are all widely used in traditionally published books. Avoid word-processor default fonts like Arial or Calibri if you want the interior to look professionally produced.
