Leaf & Spine

Royal (6.14 x 9.21 in) · 540 pages

540-page 6.14 x 9.21 in book: spine width & cover size

A 540-page 6.14 x 9.21 in paperback has a spine of 1.2161 in (30.89 mm) on white paper or 1.35 in on cream. Full cover with bleed: 13.746 x 9.46 in.

1.216 inSpine, white paper30.89 mm
1.35 inSpine, cream paper34.29 mm
13.75 x 9.46Full cover, inchesincl. bleed
759 gEstimated weight26.8 oz

Cover template (white paper)

Barcode areaBACK COVER6.14 x 9.21 inFRONT COVER6.14 x 9.21 inSPINE 1.216 inFull cover 13.746 x 9.46 in incl. 0.125 in bleed
Red: bleed (trimmed off) · dashed: 0.25 in safe zone · shaded: spine. Download a full-size template from the calculator.

Spine and cover by paper type

PaperSpineSpine (mm)Full cover (in)Full cover (mm)At 300 ppi
White paper, black ink1.2161 in30.89 mm13.746 x 9.46 in349.2 x 240.3 mm4,124 x 2,838 px
Cream paper, black ink1.35 in34.29 mm13.88 x 9.46 in352.6 x 240.3 mm4,164 x 2,838 px
Standard color (white)1.2161 in30.89 mm13.746 x 9.46 in349.2 x 240.3 mm4,124 x 2,838 px
Premium color (white)1.2674 in32.19 mm13.797 x 9.46 in350.5 x 240.3 mm4,139 x 2,838 px

Per-page factors are those published by KDP; IngramSpark and offset printers use their own paper calipers.

Other printers: spine by paper PPI

Paper PPITypical stockSpineSpine (mm)
350 PPIBulky / heavy stock (~70 lb text)1.5429 in39.19 mm
400 PPICream book paper (~55 lb)1.35 in34.29 mm
444 PPIWhite book paper (~50 lb)1.2162 in30.89 mm
500 PPILightweight text (~45 lb)1.08 in27.43 mm
600 PPIThin text (~40 lb)0.9 in22.86 mm

If your printer quotes pages per inch (PPI), spine = pages ÷ PPI. Ask for the exact PPI of your chosen stock.

Designing this cover

  • Build the cover canvas at 13.746 x 9.46 in — or 4,124 x 2,838 px at 300 ppi.
  • The back cover runs from the left edge to 6.265 in; the spine from 6.265 to 7.481 in; the front cover after that.
  • Spine text is allowed — centre it and keep 0.0625 in clear on each side.
  • Keep titles and faces at least 0.25 in inside the trim; KDP places the barcode in a 2 x 1.2 in area at the lower right of the back cover.
  • Export as a flattened PDF (PDF/X-1a is safest) with fonts embedded.

Nearby page counts

PagesSpine (white)Spine (cream)Full cover (white)
480 pages1.081 in1.2 in13.611 x 9.46 in
490 pages1.1035 in1.225 in13.633 x 9.46 in
500 pages1.126 in1.25 in13.656 x 9.46 in
520 pages1.171 in1.3 in13.701 x 9.46 in
560 pages1.2611 in1.4 in13.791 x 9.46 in
580 pages1.3062 in1.45 in13.836 x 9.46 in
600 pages1.3512 in1.5 in13.881 x 9.46 in

540 pages in other trim sizes

TrimSpine (white)Full cover (white)
5 x 8 in1.2161 in11.466 x 8.25 in
5.06 x 7.81 in1.2161 in11.586 x 8.06 in
5.25 x 8 in1.2161 in11.966 x 8.25 in
5.5 x 8.5 in1.2161 in12.466 x 8.75 in
6 x 9 in1.2161 in13.466 x 9.25 in
6.69 x 9.61 in1.2161 in14.846 x 9.86 in
7 x 10 in1.2161 in15.466 x 10.25 in
7.5 x 9.25 in1.2161 in16.466 x 9.5 in
8 x 10 in1.2161 in17.466 x 10.25 in
8.5 x 8.5 in1.2161 in18.466 x 8.75 in
8.5 x 11 in1.2161 in18.466 x 11.25 in

Spine width depends only on page count and paper; the cover width changes with the trim.

Frequently asked questions

How wide is the spine of a 540-page 6.14 x 9.21 in book?
On white paper it is 1.2161 in (30.89 mm); on cream paper 1.35 in (34.29 mm), using KDP's per-page factors.
What size should the full cover be?
For white paper: 13.746 x 9.46 in (349.2 x 240.3 mm) including 0.125 in bleed on every side. For cream paper: 13.88 x 9.46 in.
Can I put text on the spine?
Yes. KDP allows spine text only for books with more than 79 pages; keep it at least 0.0625 in (1.6 mm) from each spine edge.
How heavy is a 540-page 6.14 x 9.21 in paperback?
About 759 g (26.8 oz) on white paper with a standard cover — useful for estimating postage.