Q:
# How big is a millimeter?

**A millimeter is equivalent to about 0.04 inch, or one twenty-fifth of an inch.** A credit card is about 1 millimeter thick, as are an ordinary paper clip and a regular guitar string.

A millimeter constitutes about three one-thousandths, or less than 1 percent, of a foot. In metric terms, a meter consists of 1,000 millimeters, so 1 millimeter makes up one-thousandth of a meter. The relationship between millimeter and meter may be expressed as 1 millimeter = 0.001 meters. A centimeter consists of 10 millimeters, so 1 millimeter equals one-tenth of a centimeter. The abbreviation for millimeter is mm.

Learn more about Measurements-
Q:
## How do you read Vernier micrometer caliper scales?

A: Lock Haven University describes the micrometer caliper as a metric instrument with a pair of jaws, one of which is movable, and a main scale calibrated to ... Full Answer >Filed Under: -
Q:
## How many cm are in a mm?

A: There is one-tenth of a centimeter in a millimeter. Centimeters are one one-hundredth of a meter and millimeters are one one-thousandth of a meter; therefo... Full Answer >Filed Under: -
Q:
## What is smaller than a millimeter?

A: In the metric scale, a micrometer is smaller than a millimeter. Micrometers are also called microns, and there are 1,000 microns in a millimeter. A human h... Full Answer >Filed Under: -
Q:
## How many inches is 25mm?

A: According to the Oxford Dictionaries, one millimeter is a unit of measure for length that is equal to 0.039 inches. Therefore, 25 millimeters is equal to 2... Full Answer >Filed Under: