If you are a self-published author working on guides, how-to books, and informational texts and your manuscript is currently in DOCX format, this guide will walk you through everything you need to know about converting it to a professional Kindle EPUB at the 6" x 9" (152 x 229 mm) trim size.
Why 6" x 9" for Non-Fiction?
The 6" x 9" trim size is the industry standard for guides, how-to books, and informational texts. It provides a comfortable reading experience while keeping printing costs manageable. At this size, a typical 60,000-word non-fiction manuscript will produce approximately 250-280 pages.
Converting DOCX to Kindle EPUB
Your DOCX file from Microsoft Word documents needs to be converted to a format that Amazon Kindle eBook EPUB can accept.
Key Requirements for Kindle EPUB
Kindle requires a reflowable EPUB file with a properly coded NCX navigation table, a hyperlinked HTML Table of Contents, and optimised images at 72 DPI.
Margin Requirements at 6" x 9"
For a 6" x 9" book, the minimum margins are:
| Margin | Minimum | Recommended |
|---|---|---|
| Top | 0.25" (6.4 mm) | 0.5" (12.7 mm) |
| Bottom | 0.25" (6.4 mm) | 0.5" (12.7 mm) |
| Outside | 0.25" (6.4 mm) | 0.5" (12.7 mm) |
| Gutter (inside) | Varies by page count | See KDP gutter table |
Common Formatting Challenges for Non-Fiction
Non-fiction books often include tables, numbered lists, footnotes or endnotes, and cross-references. These elements require careful formatting to ensure they survive the conversion process intact.
The Automated Alternative
Manually converting a DOCX file to a Kindle EPUB-ready format at 6" x 9" can take hours of trial and error. At publishing.co.uk, our automated formatting engine handles the entire process in minutes.
Simply upload your DOCX file, select 6x9 as your trim size, and receive a professionally formatted Kindle EPUB file that is guaranteed to pass KDP’s automated review.
From £29.99. Unlimited revisions. Guaranteed acceptance.