Paper Weight Conversion Chart

We know that paper weights can be confusing & get a ton of questions about what gsm is and how it relates to lbs. In a nutshell here’s what you need to know.

The European measurement of describing paper weight measures a single paper with a two dimensional height and width of one square meter. This measurement is noted as g/m2 (gm/m2, gsm, g/m2). The measurement may be measuring a hypothetical square meter, but is a good “apples to apples” reference because it compares the weights of different size papers.

The English method of paper weight may be more familiar to people, but it has its drawbacks when comparing weights of different size paper. The English method of measurement gives the weight of the paper as if weighing 500 sheets (or a ream). Differences in the dimensions of paper are not taken into account. Therefore, the English weight of a letter size paper that is thick and dense may be the same as a poster size paper that is light and tissue thin because 500 sheets of each weight the same. It’s the “which weights more, a ton of lead or a ton of feathers” quandary.

English paper grade to grammage conversion
Grammage Paper Grade (LBS.)
44 gsm 30 lb. text
59 gsm 16 lb. bond, 40 lb. text
67 gsm 45 lb. text
89 gsm 24 lb. bond, 60 lb. text
104 gsm 70 lb. text
118 gsm 80 lb. text
148 gsm 67 lb. bristol, 100 lb. text
162 gsm 60 lb. cover
163 gsm 90 lb. index
176 gsm 65 lb. cover
178 gsm 80 lb. bristol
199 gsm 110 lb. index
216 gsm 80 lb. cover
219 gsm 100 lb. bristol
253 gsm 140 lb. index
263 gsm 120 lb. bristol
270 gsm 100 lb. cover
307 gsm 140 lb. bristol
308 gsm 170 lb. index
325 gsm 120 lb. cover


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1 Comment

  1. Megan A. says:

    Great info! This is always so confusing. Thanks for sharing!

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