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How much does a sheet of paper weigh?

Mon 29 Mar 2010 by mskala Tags used: ,

A standard sheet of laser-printer paper of the usual thickness, either US "letter" size or international "A4" size, weighs 4.5 grams. That means 100 sheets weighs almost exactly one pound.

One sheet is 0.16 of one ounce (28.35g); there are 6.3 sheets per ounce.

One sheet is 0.01 of one pound (454g); there are 101 sheets per pound.

One sheet is 0.0045 of one kilogram (1000g); there are 222 sheets per kilogram.

My book Shining Path can be read online, but the printed version is 442 double-sided pages, thus 221 leaves, each 31% of the area of a letter-sized sheet; that works out to about 311g using the above paper density, although the real book weighs more like 389g taking into account the weight of the cover and that it's not printed on plain laser paper.