A millimicron is one thousandth of one millionth of one meter.
Most of the world uses the metric system. The only countries not on this system are the U.S., Myanmar, and Liberia.
The metric system is based on 10s. For example, 10 decimeters make a meter (39.37 inches).
Units smaller than a meter have Latin prefixes:
- Deci- means 10; 10 decimeters make a meter.
- Centi- means 100; 100 centimeters make a meter.
- Milli- means 1,000; 1,000 millimeters make a meter.
Units larger than a meter have Greek prefixes:
- Deka- means 10; a dekameter is 10 meters.
- Hecto- means 100; a hectometer is 100 meters.
- Kilo- means 1,000; a kilometer is 1,000 meters.
Helpful Hints
Remember: A meter is a little more than a yard. A kilometer is less than a mile. A liter is a little more than a quart.
The Metric System
Length
Kilometer (km) | 1,000 Meters |
Hectometer (hm) | 100 Meters |
Dekameter (dam) | 10 Meters |
Meter (m) | 1 Meter |
Decimeter (dm) | 0.1 Meter |
Centimeter (cm) | 0.01 Meters |
Millimeter (mm) | 0.001 Meters |
Capacity
Kiloliter (kl) | 1,000 Liters |
Hectoliters (hl) | 100 Liters |
Dekaliters (dal) | 10 Liters |
Liter (l) | 1 Liter(*) |
Deciliter (dl) | 0.10 Liters |
Centiliter (cl) | 0.01 Liters |
Milliliter (ml) | 0.001 Liters |
* 1 liter + U.S. 1.057 quarts |
Mass and Weight
Metric Ton | 1,000,000 Grams |
Quintal (P) | 100,000 Grams |
Myriagram | 10,000 Grams |
Kilogram | 1,000 Grams |
Hectogram | 100 Grams |
Dekagram | 10 Grams |
Gram | 1 Gram(*) |
Decigram | 0.10 Grams |
Centigram | 0.01 Grams |
Milligrams | 0.001 Grams |
* 1 gram + U.S. 0.035 ounces |
If we are talking about lengths, here, then "m" (meters) would be bigger than "mm" (millimeters). There are 1,000 millimeters in one meter. I hope I answered your question.
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The metric system is a system of measurement based on the powers of 10 . First adopted in France in 1791 , the metric system has become widely used in many countries of the world, and is the main system used in science.
The basic metric unit of length is the meter , equal to about 3.28 feet. Some smaller and larger units are named as follows:
nanometer(nm) | 1 1 , 000 , 000 , 000 of a meter |
micrometer(um) | 1 1 , 000 , 000 of a meter |
millimeter(mm) | 1 1000 of a meter |
centimeter(cm) | 1 100 of a meter |
decimeter(dm) | 1 10 of a meter |
meter(m) | 1 meter |
dekameter(dam) | 10 meters |
hectometer(hm) | 100 meters |
kilometer(km) | 1000 meters |
Megameter(Mm) | 1,000,000 meters |
Gigameter(Gm) | 1,000,000,000 meters |
Terameter(Tm) | 1,000,000,000,000 meters |
The same prefixes are used for other units. For example, 1 kilogram is equal to 1000 grams (a unit of mass), and 1 centiliter is equal to 1 100 of a liter (a unit of volume).
Other metric units include the newton (a unit of force), the pascal (a unit of pressure), the watt (a unit of power), the joule (a unit of energy), and the ampere (a unit of electric current).