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Caliper Thickness TableApproximate thickness per sheet in inches
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Book
paper: 25 x 38 Weight per ream (in lbs)
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50
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60
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70
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80
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100
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120
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Approx. Thickness
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Coated
Book
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.003
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.0035
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.004
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.0055
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.006
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Eng.
Fin.
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.0031
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.0036
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.0042
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.0048
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Offset
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.0035
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.004
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.0048
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.0055
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.0075
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.009
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Text
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.0065
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.007
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Cover
Paper: 20 x 26 Weight per ream (in lbs)
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50
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60
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65
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80
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90
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100
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120
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Approx. Thickness
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Uncoated
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.007
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.009
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.0105
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.013
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.0145
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.018
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Coated
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.006
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.007
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Printing
Bristol: 22.5 x 28.5 Weight
per ream (in lbs)
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57
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67
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80
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100
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Approx. Thickness
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Vellum
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.0077
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.009
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.01075
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.0135
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Index:
25.5 x 30.5 Weight per ream (in lbs)
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90
|
110
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140
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Approx.
Thickness
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.0075
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.0095
|
.012
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Tag:
24 x 36 Weight per ream (in lbs)
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100
|
125
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150
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175
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200
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250
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Approx.
Thickness
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.007
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.0095
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.011
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.0125
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.015
|
.0185
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R.R.
Board, Blanks, Sign Board: 22 x 28 Weight
per ream (in lbs)
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2-ply
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3-ply
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4-ply
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5-ply
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6-ply
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8-ply
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10-ply
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12-ply
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14-ply
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Approx.
Thickness
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.012
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.015
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.018
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.021
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.024
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.030
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.036
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.042
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.048
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To obtain caliper if ply is
known:
To obtain ply if caliper is known:
(3 x ply) + 6 = caliper
(Caliper – 6)/3 = ply
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Business
Paper: 17 x 22 Weight per ream (in lbs)
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9
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13
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16
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20
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24
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28
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32
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36
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Approx. Thickness
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Bond
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.002
|
.0025
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.004
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.005
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Mimeo
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.004
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.005
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.006
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Duplicator
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.004
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.005
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.00525
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.00575
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Ledger
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.0045
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.005
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.006
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.0065
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.0075
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Disclaimer: The data in these tables should be considered to be averages only and are not guaranteed by PGI, Inc. as accurate in all situations.
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