The paper choice dropdown in KDP looks simple, but it carries consequences that affect your book's physical dimensions, your spine width calculation, your genre positioning, and even how your interior photography looks in marketing materials. This guide breaks down exactly when to choose each option and why.
The Physical Difference
KDP offers two primary paper stocks for black-and-white interiors:
- White Standard (55 lb): 444 PPI (Pages Per Inch) — the default and most common
- Cream (60 lb): 400 PPI — heavier, lower PPI means thicker pages
The 60 lb cream paper is heavier per sheet, which is why it has a lower PPI. This has a direct effect on your spine: a 300-page book on cream paper will be approximately 0.75 inches thick, versus 0.68 inches on white paper. For books over 400 pages, this difference becomes visually significant.
Reading Experience and Eye Fatigue
White paper provides higher contrast with black ink, which benefits books with dense technical content: textbooks, reference manuals, workbooks, and non-fiction with tables or data. The sharper contrast makes it easier to scan information quickly.
Cream paper reduces the contrast slightly, which actually reduces eye fatigue during extended reading sessions. This is why cream has been the traditional choice for literary fiction, novels, and poetry for over a century. The warmer tone also gives a book a more premium, traditional feel that many readers associate with quality trade paperbacks.
Genre Conventions
Genre matters here more than personal preference. Readers have deeply ingrained associations:
- Fiction, literary fiction, poetry: Cream paper is the professional standard. White paper in these genres can make a book look self-published at a glance.
- Non-fiction, business, self-help: White paper is the norm. It feels cleaner and more contemporary for information-dense content.
- Children's books (black-and-white): White paper for maximum contrast and brightness.
- Academic and technical: White standard. Tables, code blocks, and diagrams render more crisply.
Cost Implications
Cream premium paper costs slightly more to print. For a typical 300-page paperback, the difference is usually $0.10–$0.20 per copy in printing cost. Over 500 units, that is $50–$100 in additional production cost, which directly reduces your royalty per copy. For most authors, this is negligible, but at volume it is worth factoring into your pricing model.
Marketing Photography
If you plan to photograph your book for social media or your author website, cream paper photographs more warmly and works better with lifestyle-style flat lays (coffee, candles, cozy settings). White paper photographs more clinically and suits professional headshots or stark minimalist compositions. Neither is better — they serve different aesthetic narratives.
How to Choose
The decision tree is simple: if you are writing fiction or poetry, choose cream. If you are writing non-fiction or technical content, choose white. If you are writing something that sits in between — a narrative non-fiction book, a memoir — look at the top-selling books in your specific sub-genre and match the standard.
PPI Values Compared Side by Side
The pages-per-inch constant that determines spine width differs meaningfully between the two paper stocks, because cream paper uses a heavier, more opaque furnish than standard white paper:
| Paper type | PPI | Spine width for 300 pages |
|---|---|---|
| White, standard | 444 | 0.675in |
| Cream | 400 | 0.75in |
A 300-page book prints roughly 0.075in wider on cream paper than white — a small difference per book, but one that matters directly for cover template accuracy. Using the wrong paper's PPI value when calculating spine width is a common cause of cover proof rejections, particularly for authors who switch paper choice late in the design process without recalculating the template.
Availability Varies by Marketplace
Not every KDP marketplace offers both paper options for every trim size and binding combination — cream paper availability in particular varies by region and format, and an author designing for multiple international marketplaces should confirm both options are actually available before committing to a paper choice in the cover design.
This regional variation is easy to miss because KDP's interface only surfaces the restriction at the point of upload for a specific marketplace, not earlier in the process. Checking availability for every marketplace you intend to publish in, before finalizing interior formatting, avoids a late-stage surprise.
Frequently Asked Questions
Does cream paper cost more to print?
Marginally, in some marketplaces — the per-page printing cost difference is small compared to the overall printing cost, but it is not always zero, so check current KDP rates for your specific marketplace before assuming price parity.
Which paper do most bestselling novels use?
Cream is the traditional standard for adult fiction, closely matching the look of trade-published paperbacks readers already expect from the genre. Non-fiction and technical books lean toward white more often, particularly where photos or diagrams benefit from higher contrast.
Can I offer both paper options for the same book?
Not as a single KDP listing — each paper choice requires its own edition setup, meaning separate cover templates matched to each option's spine width, though both can share the same interior content file.
Does paper choice affect the ebook edition?
No, paper type is a print-only consideration. The Kindle ebook edition of the same book is unaffected by whichever print paper stock you choose.
How do I know which PPI value my book is using?
KDP's own cover template generator uses the correct PPI automatically once you select your paper type and page count, which is the safest way to confirm you have not mismatched the two.
Calculate your exact spine width for either paper choice with the spine width calculator.
Before finalizing your decision, calculate your spine width for both options using the Spine Width Calculator. Your spine width affects your cover template dimensions, so it is better to confirm the measurement before your designer starts work.