# Metric fact sheet

## Metric units

Meter is the unit for linear measurement.

• One meter is a little longer than one yard.
• One millimeter = .001 meter or one thousandth meter (diameter of a paper clip)
• One centimenter = .01 meter or one hundredth meter (width of a paper clip or little finger)
• One kilometer = 1000 meters (a bit more than half a mile)
• 1000 mm = 1 m
• 100 cm = 1 m
• 1000 m = 1 km

Liter is the unit for volume. One liter is a little more than a quart.

• milliliter is .001 liters or one thoundth liter: Five ml is about a teaspoon.

Gram is the unit for mass. One gram is about the weight of a paper clip.

• kilogram is 1000 grams. One kilogram is about the same as a can of peaches about 2.2 pounds.

Most used prefixes for metric units:

• milli = one thousandth (.001)(10 -3)
• centi = one hundredth (.01) (10-2)
• kilo = one thousand times (1000)(103)
• More metric prefixes

Some prefixes on a number line:

## Metric prefixes

Metric prefixes, symbols, & powers
Prefix Symbol Power
Quecca Q 1030
Ronna R 1027
Yotta Y

1024

Zetta Z 1021
Exa E 1018
Peta P 1015
Tera T 1012
Giga G 109
Mega M 106
kilo k 103
milli m 10-3
micro μ 10-6
nano n

10-9

pico p

10-12

femto f 10-15
atto a 10-18
zepto z 10-21
yocto y 10-24
ronto r 10-27
quecto q 10-30