Converting US and Asian
paper weights
We measure paper weight in pounds (lb) and points
(pt) in the US. Asia (and Europe) measures in
millimeters (mm) and grams per square meter
(gsm).Standards vary from country to country, but
this chart will give you some of the possible
conversions. We may alter specifications on a quote
if we find a better cost for you in a different country
of origin than used in this chart.
If you print on 60 lb offset, you can go to a lower
weight, 80 gsm, or a little heavier weight, 100 gsm,
wood free (uncoated paper).
paper weights
We measure paper weight in pounds (lb) and points
(pt) in the US. Asia (and Europe) measures in
millimeters (mm) and grams per square meter
(gsm).Standards vary from country to country, but
this chart will give you some of the possible
conversions. We may alter specifications on a quote
if we find a better cost for you in a different country
of origin than used in this chart.
If you print on 60 lb offset, you can go to a lower
weight, 80 gsm, or a little heavier weight, 100 gsm,
wood free (uncoated paper).
HARDCOVER
Add thickness of front and back boards.
Gloss is thinner than the same weight of matte.
MATTE ART (Coated)
80 gsm 651 ppi
100 gsm 546 ppi
120 gsm 454 ppi
140 gsm 348 ppi
180 gsm 282 ppi
Add thickness of front and back boards.
Gloss is thinner than the same weight of matte.
MATTE ART (Coated)
80 gsm 651 ppi
100 gsm 546 ppi
120 gsm 454 ppi
140 gsm 348 ppi
180 gsm 282 ppi
PPI (Page Per Inch) counts determine
spine width
SPB will provide spine width.
Example Formula:
SOFTCOVER
Divide the page count by the PPI noted in the
charts below. Add 0.03" to allow for gathered
signatures, cover and glue. Example for 184
page book printed on 140 gsm matte art.184
pages divided by 348 ppi equals 0.53" plus 0.03"
equals a spine width of 0.56".
spine width
SPB will provide spine width.
Example Formula:
SOFTCOVER
Divide the page count by the PPI noted in the
charts below. Add 0.03" to allow for gathered
signatures, cover and glue. Example for 184
page book printed on 140 gsm matte art.184
pages divided by 348 ppi equals 0.53" plus 0.03"
equals a spine width of 0.56".
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Book Printing in Asia
Coated stock
GLOSS ART or MATTE ART coffee table books
57 lb 80 gsm
64 lb 90 gsm
78 lb 100 gsm
86 lb 120 gsm
91 lb 150 gsm
100 lb 180 gsm
GLOSS ART or MATTE ART coffee table books
57 lb 80 gsm
64 lb 90 gsm
78 lb 100 gsm
86 lb 120 gsm
91 lb 150 gsm
100 lb 180 gsm
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Paper Conversion
GLOSS ART (Coated)
80 gsm 726 ppi
100 gsm 605 ppi
120 gsm 535 ppi
140 gsm 405 ppi
180 gsm 332 ppi
80 gsm 726 ppi
100 gsm 605 ppi
120 gsm 535 ppi
140 gsm 405 ppi
180 gsm 332 ppi
WOOD FREE (Uncoated)
80 gsm 552 ppi
100 gsm 462 ppi
80 gsm 552 ppi
100 gsm 462 ppi
Uncoated stock
WOODFREE (offset) novels, children's books
54 lb 80 gsm
68 lb 100 gsm
81 lb 120 gsm
95 lb 140 gsm
122 lb 180 gsm
16 pt 360 gsm
WOODFREE (offset) novels, children's books
54 lb 80 gsm
68 lb 100 gsm
81 lb 120 gsm
95 lb 140 gsm
122 lb 180 gsm
16 pt 360 gsm
Hardcover binding board
GREY BOARD cover board for hardcover books
60 pt 16 oz. 1.4 mm 1,000 gsm
65 pt 20 oz. 1.8 mm 1,300 gsm
70 pt 24 oz. 2.0 mm 1,400 gsm
80 pt 28 oz. 2.2 mm 1,600 gsm
88 pt 32 oz. 2.6 mm 1,800 gsm
92 pt 36 oz. 2.8 mm 2,000 gsm
98 pt 40 oz. 3.0 mm 2,100 gsm
140 pt 48 oz. 3.4 mm 2,400 gsm
GREY BOARD cover board for hardcover books
60 pt 16 oz. 1.4 mm 1,000 gsm
65 pt 20 oz. 1.8 mm 1,300 gsm
70 pt 24 oz. 2.0 mm 1,400 gsm
80 pt 28 oz. 2.2 mm 1,600 gsm
88 pt 32 oz. 2.6 mm 1,800 gsm
92 pt 36 oz. 2.8 mm 2,000 gsm
98 pt 40 oz. 3.0 mm 2,100 gsm
140 pt 48 oz. 3.4 mm 2,400 gsm
Paperback or Perfect Bound cover stock
Art Board perfect bound softcover books, C1S,
C2S, gloss art, matte art, and wood free
10 pt 200 gsm
12 pt 250 gsm
14 pt 300 gsm
16 pt 350 gsm
Art Board perfect bound softcover books, C1S,
C2S, gloss art, matte art, and wood free
10 pt 200 gsm
12 pt 250 gsm
14 pt 300 gsm
16 pt 350 gsm
425.603.1777
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