The Metric System | The International System of Units is a modernized version of
the metric system, established by international agreement that
provides a logical and interconnected framework for all
measurements in science, industry, and commerce.
The system is built on a foundation of seven basic units, and all other units are derived from them. |
Length | Meter Equal to the distance traveled by light in a vacuum in 1/299,792,458 of a second. |
Time | Second Defined as the duration of 9,192,631,770 cycles of the radiation associated with a specified transition of the cesium 133 atom. |
Mass | Kilogram The standard for the kilogram is a cylinder of platinum-iridium alloy kept by the International Bureau of Weights and Measures at Paris. A duplicate at the National Bureau of Standards serves as the mass standard for the U. S. The kilogram is the only base unit still defined by a physical object. |
Temperature | Kelvin Defined as the fraction 1/273.16 of the thermodynamic temperature of the triple point of water; that is, the point at which water forms an interface of solid, liquid, and vapor. This is defined at 0.01 degrees Celsius, or 32.02 degrees Farenheit. Zero degrees K is called absolute zero. |
Electric Current | The ampere is defined as that current that, if
maintained in each of two long, parallel wires
seperated by one meter in free space, would produce a force
between the two wires (due to their magnetic
fields) of 2 x 10^{-7} newton for each meter of length.
(A newton is the unit of force that when applied to one kg mass would experience an acceleration of one meter per second per second.) |
Luminous Intensity | Candela Defined as the luminous intensity of 1/600,000 of a square meter of a cavity at the temperature of freezing platinum, 2,042K. |
Amount of Substance | Mole The mole is the amount of substance of a system that contains as many elementary particles as there are atoms in .012 kg of carbon-12. |
Unit | Kilometer | Hectometer | Deckameter | Meter | Decimeter | Centimeter | Millimeter |
---|---|---|---|---|---|---|---|
Symbol | 1 km = | 1 hm = | 1 dam = | 1 m = | 1 dm = | 1 cm = | 1 mm = |
Base Unit Value | 1000 m | 100 m | 10 m | 1 m | 0.1 m | 0.01 m | 0.001 m |
Unit | Kilometer | Hectometer | Deckameter | Meter | Decimeter | Centimeter | Millimeter |
---|---|---|---|---|---|---|---|
Symbol | 1 sq. km = | 1 sq. hm = | 1 sq. dam = | 1 sq. m = | 1 sq. dm = | 1 sq. cm = | 1 sq. mm = |
Base Unit Value | 1 000 000 sq.m | 10 000 sq. m | 100 sq. m | 1 sq. m | 0.01 m | 0.0001 m | 0.000001 m |
Unit | Kiloliter | Hectoliter | Deckaliter | Liter | Deciliter | Centiliter | Milliliter |
---|---|---|---|---|---|---|---|
Symbol | 1 kL = | 1 hL = | 1 daL = | 1 L = | 1 dL = | 1 cL = | 1 mL = |
Base Unit Value | 1000 L | 100 L | 10 L | 1 L | 0.1 L | 0.01 L | 0.001 L |
Unit | Kilogram | Hectogram | Deckagramr | Gram | Decigram | Centigram | Milligram |
---|---|---|---|---|---|---|---|
Symbol | 1 kg = | 1 hg = | 1 dag = | 1 g = | 1 dg = | 1 cg = | 1 mg = |
Base Unit Value | 1000 g | 100 g | 10 g | 1 g | 0.1 g | 0.01 g | 0.001 g |
TO CONVERT FROM | TO | MULTIPLY BY |
inches | millimeters | 25.4 |
inches | centimeters | 2.54 |
inches | meters | .0254 |
feet | meters | .304 |
yards | meters | .914 |
miles | kilometers | 1.609 |
millimeters | inches | .039 |
centimeters | inches | .39 |
meters | inches | 39.37 |
meters | feet | 3.28 |
meters | yards | 1.09 |
kilometers | miles | .62 |
TO CONVERT FROM | TO | MULTIPLY BY |
sq. in. | sq. cm | 6.451 |
sq. ft. | sq. m | .092 |
sq. yds. | sq m | .8 |
sq. mi | sq. km | 2.6 |
sq. cm | sq. in. | .155 |
sq. m | sq. ft. | 10.763 |
sq. m | sq. yd. | 1.2 |
sq. km | sq. mi | .3861 |
TO CONVERT FROM | TO | MULTIPLY BY |
ounces | grams | 28.35 |
pounds | kg | .453 |
tons | kg | 907.2 |
grams | oz. | .035 |
kg | lbs. | 2.205 |
tons | lbs. | 2205 |
TO CONVERT FROM | TO | MULTIPLY BY |
cubic inches | cubic centimeters | 16.387 |
cu. yd | cu. meter | .764 |
fl. oz. | ml(cc) | 29.574 |
fl. oz. | liters | ..029 |
pints | liters | .473 |
quarts | liters | .946 |
gallons | liters | 3.785 |
cc | cu. in. | .061 |
cu. m | cu. yd. | 1.308 |
liters | fl. oz. | 33.814 |
liters | pints | 2.113 |
liters | quarts | 1.056 |
liters | gallons | .264 |
Temperature | Celsius = (Fahrenheit - 32)(5/9) Kelvin = Celsius + 273.16 Fahrenheit = Celsius(9/5) + 32 |
km/liter | kilometers per liter = miles per gallon(.4251) |