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).
(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".
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".
Coated stock
GLOSS ART or MATTE ART coffee table
books
54 lb 80 gsm
61 lb 90 gsm
68 lb 100 gsm
82 lb 120 gsm
101 lb 150 gsm
122 lb 180 gsm
135 lb 200 gsm
GLOSS ART or MATTE ART coffee table
books
54 lb 80 gsm
61 lb 90 gsm
68 lb 100 gsm
82 lb 120 gsm
101 lb 150 gsm
122 lb 180 gsm
135 lb 200 gsm
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
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
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
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
US pounds and points versus Asian
and European GSM
and European GSM
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