The approximate weight of a bill, regardless of denomination, is 1 gram. A $100 bill weighs the same amount as any other denomination of U.S. paper currency, because they are all the same size. Since there are about 454 grams in 1 U.S. pound, a pound of $100 bills is worth $45,400.
U.S. paper bills are printed on currency paper that is made of 75 percent cotton and 25 percent linen. The currency paper is durable enough that it can be double folded about 4,000 times before the bill tears. A double fold means the paper is folded first forward and then backwards. The Bureau of Engraving and Printing, a part of the U.S. Department of the Treasury, is in charge of designing and printing paper money.
The highest denomination note the Bureau ever printed was a $100,000 Gold Certificate in 1934. Those notes were used for transactions between the Federal Reserve Banks and were never used by the public. The Bureau sells uncut sheets of notes, the largest of which has 32 notes on it. The Secretary of the Treasury selects whose portraits appear on paper bills. Only a portrait of a deceased individual may appear on U.S. currency by law.