Q:
# How big is 8 millimeters?

**A length of 8 millimeters is equivalent to about 0.31 inch, or slightly less than 1/3 inch.** A human pupil measures about 3 to 4 millimeters in normal room light, so 8 millimeters approximates the combined diameters of two pupils.

A length of 8 millimeters constitutes about 3 percent of a foot. In metric terms, a meter consists of 1,000 millimeters, so 8 millimeters make up 0.8 percent of a meter. A centimeter consists of 10 millimeters, so 8 millimeters equal 0.8 centimeter. The diameter of a quarter is about 24 millimeters, which means that 8 millimeters is one-third of the diameter of a quarter.

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Q:
## What is the difference between inches and centimeters?

A: A major difference between inches and centimeters is that 1 inch is more than 2 1/2 times the length of 1 centimeter. Although both are units of length, th... Full Answer >Filed Under: -
Q:
## How big is 12 millimeters?

A: A length of 12 millimeters is equivalent to about 0.47 inches, or slightly less than half an inch. The diameter of a dime is about 18 millimeters, so 12 mi... Full Answer >Filed Under: -
Q:
## What is 17mm in inches?

A: Seventeen millimeters is the equivalent of 0.669 inches, or slightly more than 2/3 inch. One inch equals 2.54 centimeters and, therefore, 25.4 millimeters.... Full Answer >Filed Under: -
Q:
## How long is an inch?

A: An inch equals 1/12 of a foot and 1/36 of a yard in the U.S. customary and imperial measurement systems. It also equals 25.4 millimeters, or 0.0254 meters.... Full Answer >Filed Under: