Metric Weights and Measures
A millimicron is one thousandth of one millionth of one metre.
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Most of the world uses the metric system. The only countries not on this system are the U.S., Burma, Liberia, Muscat, and South Yemen.
The metric system is based on 10s. For example, 10 decimetres make a metre (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 metre 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
| Unit | Value |
|---|---|
| Kilometre (km) | 1,000 meters |
| Hectometre (hm) | 100 meters |
| Dekametre (dam) | 10 meters |
| metre (m) | 1 meter |
| Decimetre (dm) | 0.1 meter |
| Centimetre (cm) | 0.01 meters |
| Millimetre (mm) | 0.001 meters |
Capacity
| Unit | Value |
|---|---|
| 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 + 1.057 quarts | |
Mass and Weight
| Unit | Value |
|---|---|
| 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 | |
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