Definitions:

 

  • Basis Weight
    The basis weight of a paper is the designated fixed weight of 500 sheets,
    measured in pounds, in that paper's basic sheet size.
    It is important to note that the "basic sheet size" is not the same
    for all types of paper.

  • Caliper
    Caliper refers to the thickness of a sheet of paper expressed
    in thousandth of an inch. This measurement is taken with a micro meter.
    Normally, paper caliper should not have more than a + or - 5% variance
    within a sheet. Generally, the relation between caliper and basis weight ....
    the greater the caliper (the thicker the paper), the greater the paper weight.

  • Equivalent Weight
    While different paper types have different basic sizes,
    papers can still be compared by using equivalent weight.

Basis Weight ("Category") Table

Type Paper

Basic Size - 500 Sheets

 

"Bond"
Ledger
Mimeo
Duplicator
Rag Paper

17" x 22"

 

"Offset"
Book
Text
Coated Paper

25" x 38"

 

"Cover"

20" x 26"

 

"Tag Stock"

24" x 36"

 

"Index"

25-1/2" x 30-1/2"

 

The Values in the table below are intended to serve as a guide only.
They should not be used as specifications because there are variances
within the same basis weight due to other characteristics of the papers.
Similar weight papers may vary between different paper manufacturers.


 

--
Bond
Ledger


-
Offset
Text


-
Cover
-


--
Tag
--


-
Index
-


-
Points
-


-
*Caliper
(inches)


--
millimeters
--


-
Metric
(grams/sq meter)


Equivalent

16

40

22

37

33

3.2

.0032

0.081

60.2 gsm

Weight

18

45

24

41

37

3.6

.0036

0.092

67.72 gsm

 

20

50

28

46

42

3.8

.0038

0.097

75.2 gsm

 

24

60

33

56

50

4.8

.0048

0.12

90.3 gsm

 

28

70

39

64

58

5.8

.0058

0.147

105.35 gsm

 

29

73

40

62

60

6

.0060

0.152

109.11 gsm

 

31

81

45

73

66

6.1

.0061

0.155

116.63 gsm

 

35

90

48

80

74

6.2

.0062

0.157

131.68 gsm

 

36

90

50

82

75

6.8

.0068

0.173

135.45 gsm

 

39

100

54

90

81

7.2

.0072

0.183

146.73 gsm

                   
 

40

100

56

93

83

7.3

.0073

0.185

150.5 gsm

 

43

110

60

100

90

7.4

.0074

0.188

161.78 gsm

 

44

110

61

102

92

7.6

.0076

0.193

165.55 gsm

 

47

120

65

108

97

8

.0078

0.198

176.83 gsm

 

53

135

74

122

110

9

.0085

0.216

199.41 gsm

 

54

137

75

125

113

9

.009

0.229

203.17 gsm

 

58

146

80

134

120

9.5

.0092

0.234

218.22 gsm

 

65

165

90

150

135

10

.0095

0.241

244.56 gsm

 

67

170

93

156

140

10.5

.010

0.25

252.08 gsm

 

72

183

100

166

150

11

.011

0.289

270.9 gsm

 

76

192

105

175

158

13

.013

0.33

285.95 gsm

 

82

208

114

189

170

14

.014

0.356

308.52 gsm

 

87

220

120

200

180

15

.015

0.38

312 gsm

 

105

267

146

244

220

18

.0175

0.445

385.06 gsm

  The darker colored boxes above represent the
"most common paper weights" for that category.

International Metric Paper Sizes - ISO Standard

SIZE


WIDTH (mm)


HEIGHT (mm)


WIDTH (in.)


HEIGHT(in.)


 

A0

841 mm

1,189 mm

33.11 in.

46.81 in.

 

A1

594 mm

841 mm

23.39 in.

33.11 in.

 

A2

420 mm

594 mm

16.54 in.

23.39 in.

 

A3

297 mm

420 mm

11.69 in.

16.54 in.

 

A4

210 mm

297 mm

8.27 in.

11.69 in.

 

A5

148 mm

210 mm

5.83 in.

8.27 in.

 

A6

105 mm

148 mm

4.13 in.

5.83 in.

 

A7

74 mm

105 mm

2.91 in.

4.13 in.

 

B0

1,028 mm

1,456 mm

40.48 in.

57.32 in.

 

B1

707 mm

1,000 mm

28.66 in.

40.48 in.

 

B2

514 mm

728 mm

20.24 in.

28.66

 

B3

364 mm

514 mm

14.33 in.

20.24 in.

 

B4

257 mm

364 mm

10.12 in.

14.33 in.

 

B5

182 mm

257 mm

7.17 in.

10.12 in.

 

B6

128 mm

182 mm

5.04 in.

7.17 in.

 

Commercial / Official Sizes
( Commercial Flap; unless noted)

No.

Inches

Millimeters

6 1/4

3 1/2 x 6

89 x 152

6 3/4

3 5/8 x 6 1/2

92 x 165

7

3 3/4 x 6 3/4

95 x 171

Monarch (pointed Flap)

3 7/8 x 7 1/2

98 x 191

8 5/8

3 5/8 x 8 5/8

92 x 219

9

3 7/8 x 8 7/8

98 x 225

10 (also Square Flap)

4 1/8 x 9 1/2

105 x 241

11 (also Square Flap)

4 1/2 x 10 3/8

114 x 264

12 (also Square Flap)

4 3/4 x 11

121 x 279

14 (also Square Flap)

5 x 11 1/2

127 x 292

               

 

Booklet (Wallet Flap)

No.

Inches

Millimeters

3

4 3/4 x 6 1/2

121 x 165

5

5 1/2 x 8 1/8

140 x 206

6

5 3/4 x 8 7/8

146 x 225

6 1/2

6 x 9

152 x 229

6 5/8

6 x 9 1/2

152 x 241

6 3/4

6 1/2 x 9 1/2

165 x 241

7 1/4

7 x 10

178 x 254

7 1/2

7 1/2 x 10 1/2

191 x 267

9

8 3/4 x 11 1/2

222 x 292

9 1/2

9 x 12

229 x 305

10

9 1/2 x 12 5/8

241 x 321

13

10 x 13

254 x 330

 

Window (Commercial Flap)

No.

Inches

Millimeters

6 1/4

3 1/2 x 6

89 x 152

6 3/4

3 5/8 x 6 1/2

92 x 165

7

3 3/4 x 6 3/4

95 x 171

Monarch

3 7/8 x 7 1/2

98 x 191

8 5/8

3 5/8 x 8 5/8

92 x 219

9

3 7/8 x 8 7/8

98 x 225

10

4 1/8 x 9 1/2

105 x 241

11

4 1/2 x 10 3/8

114 x 264

12

4 3/4 x 11

121 x 279

14

5 x 11 1/2

127 x 292

 

Announcement (Square Flap)

No.

Inches

Millimeters

A-2

4 3/8 x 5 3/4

111 x 146

A-6

4 3/4 x 6 1/2

121 x 165

A-7

5 1/4 x 7 1/4

133 x 184

A-8

5 1/2 x 8 1/8

140 x 206

A-9

5 3/4 x 8 3/4

 

A-10

6 x 9 1/2

152 x 241

Slimline

3 7/8 x 8 7/8

98 x 225

 

Baronial (Pointed Flap)

No.

Inches

Millimeters

4

3 5/8 x 5 1/8

92 x 130

5

4 1/8 x 5 1/2

105 x 140

5 1/2

4 3/8 x 5 3/4

111 x 146

6

4 3/4 x 6 1/2

121 x 165

Lee

5 1/4 x 7 1/4

133 x 184

PAPER CONVERSION

In an effort to help eliminate the "Paper Weight" confusion problem,
we have compiled the comprehensive table listed below.
Now you can compare various types of paper and their "Equivalent Weights."

While every attempt has been made to insure the accuracy of the information provided on this web page, no guarantee can be offered or implied. Print Design has compiled this information from a number of sources and cannot be held liable for errors and/or omissions.

 

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