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Paper Weight Conversion Table

The weight of paper is measured as paper weight or ream weight.

Paper weight is the weight of one square meter of a sheet of paper, measured in units of g/m2. Ream weight is the weight in pounds of 500 sheets of the paper. The basic size varies depending on the type (grade) of paper.

The basic sizes for each grade are as follow:

Ream weight can be calculated using the following equation:

Ream weight (lb) = paper weight (g/m2) × dimension of paper (m2/sheet) × 500 (sheets)

The following table shows the relationship between paper weight and ream weight:

Ream weight

Paper weight

(g/m2)

Bond / Ledger

(lb.)

Offset / Text

(lb. text)

Cover

(lb. cover)

Index

(lb. index)

52

14

36

20

29

60

16 *

40 *

22

33

75

20 *

50 *

28

42

90

24 *

60 *

33

50

105

28 *

70 *

39

58

108

29

73

40 *

60

118

31

80 *

44

65

120

32 *

81

45

67

135

36

90

50 *

75

148

39

100 *

55

82

162

43

110

60 *

90 *

176

47

120

65 *

97

199

53

135

74

110 *

216

58

146

80 *

120

244

65

165

90 *

135

253

67

171

94

140 *

256

68

173

95

142

270

72

183

100 *

150

297

79

201

110 *

165

307

82

208

114

170 *

325

87

220

120

180 *

351

94

237

130 *

194

398

106

269

147

220 *

405

108

274

150

224

Asterisks (*) indicate the most common weights for that category.

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