If you are a self-published author working on self-help, personal development, and motivational books 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 KDP Print PDF at the 6" x 9" (152 x 229 mm) trim size.
Why 6" x 9" for Self-Help?
The 6" x 9" trim size is one of the most common choices for self-help, personal development, and motivational books. It provides a comfortable reading experience while keeping printing costs manageable. At this size, the page count depends on your font, size, leading and margins.
Converting DOCX to KDP Print PDF
Your DOCX file from Microsoft Word documents needs to be converted to a format that Amazon KDP paperback interior PDF can accept.
Key Requirements for KDP Print PDF
Amazon KDP requires a print-ready PDF with all fonts embedded, images in the correct colour space, and specific margin requirements that vary based on your final page count.
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 Self-Help
Self-help books frequently include exercises, worksheets, checklists, and call-out boxes. These interactive elements need special formatting to stand out from the main text.
The Automated Alternative
Manually converting a DOCX file to a KDP Print PDF-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 within 24 hours.
Simply upload your DOCX file, select 6x9 as your trim size, and receive a professionally formatted KDP Print PDF file built to pass KDP’s automated review.
From £69. Unlimited revisions. Built to KDP spec.