Knowing how thick a dollar bill or a stack of dollar bills is can help you estimate an amount of money quickly. It’s also information that can be helpful if you’re doing math, writing a story, or buying or selling an item for cash.

How thick is a stack of 100 dollar bills?
A dollar bill of any denomination is 6.14 inches wide and 2.61 inches tall, and every dollar bill has a thickness of 0.0043 inches. We can easily find out how thick a stack of 100 dollar bills is by multiplying 100 by 0.0043. It equals 0.43, telling us that a stack of 100 dollar bills is less than half an inch thick.
When they are freshly minted, dollar bills are crisp and flat. However, dollar bills that have been used can be wrinkled or even torn, and these changes can make it harder for the bills to lie flat in a stack.
If your stack of dollars has older bills in it, the stack might appear slightly thicker.

How much does a stack of 100 dollar bills weigh?
No matter what denomination the bill is, all paper money currently printed in the United States weighs exactly 1 gram or about 0.035 ounces.
Multiplying by 100 tells us that a stack of 100 dollar bills weighs 100 grams or about 3.5 ounces.
There are 16 ounces in a pound, so you can tell that a stack of 100 dollar bills, although it’s worth a fair amount of money, isn’t very heavy.

How many dollar bills are usually in a stack?
In order to quickly sort and count money, banks collect certain paper bill denominations into uniform stacks.
They also use colored bands to denote the stack’s value and what denomination of bills was used. There are two types of stacks that use $1 bills.
The first is a stack of 50 bills, equaling $50, which has an orange paper band or strap. A blue strap also indicates that dollar bills were used, but there are 100 of them in the stack, for a total of $100.
Stacks of money are grouped into bundles containing 10 stacks. In the case of 100 dollar bills, a bundle would equal $1,000.

Dollar Bill Size Changes
Dollar bills were not always the size they are currently. When the dollar bill was first issued in 1862, it was quite a bit larger. This version of the dollar was 3.125 inches tall and 7.375 inches wide.
This version of the dollar bill saw some design changes throughout the years.
For example, the first dollar bills had an image of Salmon P. Chase, the Secretary of the Treasury under Abraham Lincoln, printed on them.
Martha Washington’s portrait was also printed on the bill in 1886. George Washington’s portrait first appeared on the bill in 1869, but the bill’s front and back images both changed several more times.
At one point, both Martha and George Washington decorated the front of the bill.
In 1928, the size of all paper money printed in the United States was switched to the current 6.14-inch length and 2.61-inch width.
The first $1 bill of this size looked quite similar to dollar bills printed today, with George Washington’s iconic portrait on the front and the words “One Dollar” on the back.
Different paper types have also been used throughout the years, which sometimes changed how thick the dollar bill was.
For example, the treasury has used different ratios of linen and cotton. Whenever a test is run by the treasury to experiment with new papers or serial numbers, the tests are almost always done exclusively with $1 bills.
