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.

Learn more about Measurements-
Q:
## When Measuring the Length of a Pencil Do You Use Mm or Cm?

A: When measuring the length of a pencil, centimeters are used rather than millimeters because a pencil is more than a centimeter long. Millimeters are used w... Full Answer >Filed Under: -
Q:
## How Big Is 6 Mm?

A: A length of six millimeters is equal to .236 inches. In order to convert a measurement from millimeters to inches, millimeters should be divided by 25.4, t... Full Answer >Filed Under: -
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 5 Millimeters?

A: A length of 5 millimeters is equivalent to 0.1969 inches, or slightly less than 1/5 of an inch. A millimeter is a unit equal to 1/1000 of a meter, so 5 mil... Full Answer >Filed Under: