When you set up a paperback on Kindle Direct Publishing (KDP), one of the first choices is the interior paper. For a book with a black-and-white interior, the main decision is cream or white. It looks like a small detail, but it affects how your book feels to read, how thick the spine is, and whether your cover file fits.
This guide explains the real differences between cream and white paper on KDP, which genres usually use each, and what changes when you switch. If you already know your page count, you can see the exact effect on your spine with our free KDP Spine Width and Cover Size Calculator.
What KDP offers
According to KDP’s help page on print options, paperbacks with black ink can be printed on cream, white or groundwood paper. Cream and white are listed at 50 to 61 pound (74 to 90 GSM). Groundwood is a lighter 45 pound (60 GSM) paper, and KDP says groundwood printing costs about 5% less per page than cream or white.
Color books work differently. Standard color paperbacks use white paper at 50 to 61 pound, and premium color uses heavier white paper at 60 to 71 pound (88 to 105 GSM). KDP notes that white paper shows a higher contrast for images and graphics. In other words, cream is only a choice for black-and-white interiors.
KDP also notes that paper weight can vary based on the printing location, so treat these as ranges rather than exact specifications.
Cream vs white at a glance
| Cream | White | |
|---|---|---|
| Available with | Black ink only | Black ink, standard color, premium color |
| Spine thickness per page (KDP) | 0.0025 in | 0.002252 in |
| Typical use | Novels, memoir, narrative nonfiction | Nonfiction with charts, workbooks, images, color books |
| Feel | Warmer, softer contrast, traditional “novel” look | Crisper contrast, brighter page |
How the paper changes your spine
This is the part that catches people out. KDP’s cover guidelines use a per-page multiplier to calculate spine width: 0.0025 inches per page for cream and 0.002252 inches per page for white (black-and-white interiors). Cream is slightly thicker, so the same page count gives a wider spine.
- 200 pages: cream 0.500 in, white 0.450 in
- 300 pages: cream 0.750 in, white 0.676 in
- 400 pages: cream 1.000 in, white 0.901 in
The difference grows with page count. At 400 pages it is about a tenth of an inch, which is more than enough to push spine text off-center or make a cover file fail review. Your full cover width is the back cover, the spine and the front cover plus 0.125 inches of bleed on each outside edge, so a change in spine width changes the whole cover size.
The practical rule: choose your paper before you design your cover, and if you ever change it, rebuild the cover at the new size. The spine calculator gives you the spine width and full cover dimensions for both papers, plus a 300 DPI template you can design over.
Which genres use cream?
Cream is the traditional choice for books people read in long stretches. Most fiction from traditional publishers is printed on off-white paper, so readers associate it with novels. Cream is commonly chosen for:
- Novels in every genre: romance, mystery, thriller, fantasy, literary fiction
- Memoir and personal essays
- Narrative nonfiction, history and biography with few images
- Poetry collections
Many readers find cream easier on the eyes over a long session because the contrast between text and page is a little softer.
Which genres use white?
White is the better fit when the interior includes anything visual or anything the reader needs to see sharply:
- How-to and practical nonfiction with diagrams, tables or screenshots
- Workbooks, journals and planners
- Cookbooks with black-and-white photos
- Textbooks and study guides
- Any book with a color interior, since color requires white paper on KDP
Photos and gray-scale images can look muddy on cream because the warm base color shifts the tones. If your book has more than a handful of images, white is usually the safer choice.
What about groundwood?
Groundwood is a lighter, lower-cost paper available for black-ink paperbacks. KDP says it costs about 5% less per page to print, which can help on long books where printing cost eats into royalties. It is thinner and more like the paper used in mass-market paperbacks. If you consider it, order a proof copy first and decide whether the feel suits your book and your readers. KDP’s spine multipliers for groundwood should be checked on its cover guidelines page before you design.
Can you switch later?
KDP’s help page says that after publication, black-and-white paperbacks can switch between cream and white, cream and groundwood, or white and groundwood. Color-ink titles cannot switch paper type. If you do switch, remember that your spine width changes, so upload a new cover at the correct size.
How to decide in five minutes
- Does your interior use color? Then the choice is made: white.
- Does it rely on photos, charts or diagrams? Choose white for contrast.
- Is it mostly continuous text that people read for hours? Choose cream.
- Look at the top books in your category. If most competitors use cream, readers in that genre expect it.
- Order a proof. Holding the printed book answers the question faster than any guide.
Checklist before you upload
- Paper type chosen and noted with your final page count.
- Spine width calculated for that paper and page count.
- Cover built to the matching full size with 0.125 in bleed.
- Spine text only if your book has at least 79 pages, which is KDP’s minimum for spine text.
- Trim size confirmed. If you are still deciding, read KDP trim sizes explained.
- Cover dimensions double-checked against our KDP paperback cover size guide.
Frequently asked questions
Is cream or white paper better for a novel on KDP?
Cream is the more traditional choice for novels and is what many readers expect in fiction. White works too, but it gives a brighter, higher-contrast page that suits nonfiction and illustrated books better.
Does cream paper cost more than white on KDP?
KDP’s print options page does not list a price difference between cream and white. It does say groundwood costs about 5% less per page than cream or white, and that color printing costs more.
Why did my cover get rejected after I changed paper?
Cream is thicker per page than white, so changing paper changes the spine width and the full cover size. Recalculate the spine and upload a cover built to the new dimensions.
Can I use cream paper for a color book?
No. On KDP, standard color and premium color interiors are printed on white paper only.
Getting ready for launch
Paper and cover are only part of launch preparation. Once your book is printed, you will start getting requests from bloggers, podcast hosts and local media for your bio, cover image and book details. Our Author Media Kit Template puts all of that in one editable file so you can reply in minutes.
Not sure what page count to expect? Estimate it from your manuscript with the Word Count to Page Count Calculator, then check your final spine and cover size for cream and white with the KDP Spine Width Calculator.
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