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.

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Q:
## Which is the smallest unit of measurement: mm, cm, dm or m?

A: A millimeter (mm) is the smallest. In order from smallest to largest they rank millimeter, centimeter (cm), decimeter (dm), and meter (m). These are all co... 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: -
Q:
## How big is a 7 millimeter kidney stone?

A: A 7 millimeter kidney stone is considered fairly small. It can probably pass naturally by drinking extra fluids. Otherwise, it can be broken up with shock ... 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: