MM EQUIVALENT BASIS WEIGHT COMPARISON CHART
.074
35
.084
40
30
.316
32
.343
16
37
.351
40
.356
.095
45
.359
.105
50
.360
20
50
60
28
- 22½ x 35
- 20 x 26
- 20½ x 24¾
- 25½ x 30½
- 28½ x 45
- 24 x 36
Cover
Index
Index
Postcard
Tag
91
140
120
240
100
248
105
.406
70
.437
260
32
74
45
140
90
50
83
180
.463
200
288
.499
300
160
.500
.208
82
320
130
.526 120
67
.530
100
*.554
40
340
341
.561
.231
60
.232
280
.439 100
*.468
38
.209
170
111
.457
80
175
160
.438
.192
58.5
90
180
.564
100
44
143
.566
220
.579
.250
.253
140
.385
65
80
.185
.235
150
80
.405
.173
.214
220
.404
70
.211
200
150
*.403
24
.162
.193
80
100
.374
.116
.189
125
120
.347
.093
.171
Bristol
- 24 x 36
Tag
13
.168
- 22½ x 28½
- 28½ x 45
Postcard
.312
.150
Bristol
- 25½ x 30½
Index
.308
32
.147
- 25 x 38
- 20½ x 24¾
Index
30
.067
.128
Book
- 20 x 26
Cover
.063
.126
72
.289
.305
.107
- 28 x 44
- 22½ x 35
Bristol
9
110
.284
24
.086
Board
- 22½ x 28½
Bristol
20
.051
.069
- 17 x 22
- 25 x 38
Book
.283
.046
.048
Bond
- 28 x 44
Board
20
Example: Bond basis 17 x 22-20 has an MM factor of .107. This compares
closely with 25 x 38-50 book paper that has an MM factor of .105. Tag basis 24 x 36-100 has an MM factor of .232. Very often papers of such close
weight-equivalence and character can be used interchangeably.
- 19 x 24
- 17 x 22
Bond
.042
Weight comparisons are also possible through the use of this table of MM
factors.
Blotting
- 19 x 24
Blotting
MM Equivalent Wgt.
Example: The weight of 1,000 sheets 42 x 58-70 pound book paper can
be calculated by multiplying the square inch area of the 42 x 58 sheet and
by multiplying that result by the MM factor, .147. Thus, 42 x 58 = 2436 x
.147 = 358 lbs.
MM Equivalent Wgt.
Most MM Equivalent tables show the MM weights in pounds and, in using
them, it is necessary to point off three places to get the Equivalent weights.
The table herewith is shown as MM Equivalent Weight Factors, i.e., with
the decimal point already in place. The factor is the weight of 1,000 sheets
in a size one inch square. Knowing the weight of 1,000 sheets sized
one square inch, it is an easy matter to figure the correct weight of 1,000
sheets of any desired size.
*.601
120
250
370
.614 140
.254
100
.257
82.5
.281
90
www.papermartinc.com
.694
*.695
300
428
*.403, 2-ply; .468, 3-ply; .554, 4-ply; .601, 5-ply; .695, 6-ply.
800-772-2001