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Question 384498:
Answer by mtmorro(23)   (Show Source):
You can put this solution on YOUR website! The metric system uses a base unit with a power of ten as a multiplier. Because modern society uses the decimal system in almost everything, most people already know how to convert the powers. Most of the world uses it.
Length Conversion
For length, there is no difference between USA and Imperial measures.
inch foot yard mile millimeter (mm) centimeter (cm) meter (m) kilometer (km) = inch foot yard mile millimeter (mm) centimeter (cm) meter (m) kilometer (km)
Imperial/USA unit
Metric (SI) unit
Metric (SI) unit
Imperial/USA unit
Inch
2.54 centimeters
Centimeter
0.39 inches
Foot
30.48 centimeters
Meter
3.28 feet
Yard
0.91 meters
Meter
1.09 yards
Mile
1.61 kilometers
Kilometer
0.62 miles
Weight (or mass) conversion
ounce (avoirdupois) pound stone ton (UK or long) tone (us or short) mg (milligram) g (gram) kg (kilogram) tonne (metric ton) = ounce (avoirdupois) pound stone ton (UK or long) tone (us or short) mg (milligram) g (gram) kg (kilogram) tonne (metric ton)
Imperial/USA unit
Metric (SI) unit
Metric (SI) unit
Imperial/USA unit
Ounce (weight)
28.35 grams
Gram
0.035 ounces
Pound
0.45 kilograms
Kilogram
2.21 pounds
UK ton (2240 pounds)
1.02 metric tons
Metric ton (1000 kg.)
0.98 UK tons
US ton (2000 pounds)
0.91 metric tons
Metric ton (1000 kg.)
1.10 US tons
The USA and Imperial systems of measurement use the same ounce and pound. The USA ton (also known as the "short ton" is 2000 pounds, the UK ton (also known as the "long ton") is 2240 pounds, and the metric ton is 1000 kg.
In the metric (SI) system, the term mass is used instead of weight. Weight is a measure of how heavy something is, whereas mass is a measure of the amount of matter. To illustrate, something that weighs 60 pounds on the earth would only weigh about 10 pounds on the moon (due to the lower gravity of the moon), whereas something the has a mass of 60 Kilograms on the earth would still have a mass of 60 kilograms on the moon (as the amount of matter is unchanged). Consequently, the statement that 1 kilogram is 2.21 pounds is true here on earth but not elsewhere (a point mainly of interest to scientists).
Temperature Conversion
°F (degrees Fahrenheit) °C (degrees Celsius) K (Kelvin) = °F (degrees Fahrenheit) °C (degrees Celsius) K (Kelvin)
The USA and Imperial systems measure temperature using the Fahrenheit system. The Metric (SI) system originally used the Celsius temperature system, but now officially uses the Kelvin temperature system. However, few people aside from scientists have switched to the Kelvin system and the Celsius system is almost always used by most people for ordinary (non-scientific) purposes. The above converter handles Fahrenheit, Kelvin and Celsius but since the Celsius system is more commonly used than the Kelvin, we provide the following comparison of the Fahrenheit and Celsius systems::
•The freezing point of water in Fahrenheit is 32 degrees, in Celsius it is 0 degrees.
•The boiling point of water in Fahrenheit is 212 degrees, in Celsius it is 100 degrees.
•Consequently the difference between freezing and boiling is 180 degrees Fahrenheit (212-32) or 100 degrees Celsius (100-0). This means that 180 degrees change in Fahrenheit is equal to 100 degree change in Celsius, or more simply 1.8 degrees Fahrenheit equals 1.0 degrees Celsius.
This gives rise to the following equations to convert between Celsius and Fahrenheit:
•°C = (°F - 32) ÷ 1.8 For example: (68°F-32) ÷ 1.8 = (36) ÷ 1.8 = 20°C
•°F = (°C x 1.8) + 32 For example: (20°C x 1.8) + 32 = (36) + 32 = 68°F
Some common examples are:
•Freezing = 0 °C , 32°F
•Room temperature = 20 °C , 68°F
•Normal body temperature = 37 °C , 98.6°F
•A very hot day = 40 °C , 104°F
•Boiling point of water = 100 °C , 212°F
Area Conversion
For area, their is no difference between USA and Imperial measures.
inch² (square inch) foot² (square foot) yard² (square yard) acre mile² (square mile) cm² (square centimeter) m² (square meter) are hectare km² (square kilometer) = inch² (square inch) foot² (square foot) yard² (square yard) acre mile² (square mile) cm² (square centimeter) m² (square meter) are hectare km² (square kilometer)
Imperial/USA unit
Metric (SI) unit
Metric (SI) unit
Imperial/USA unit
Acre
0.40 hectare
Hectare
2.47 acres
Square inch
6.45 square centimeters
Square centimeter
0.16 square inches
Square foot
0.09 square meters
Square meter
Square yard
0.84 square meters
Square meter
1.20 square yards
Square mile
2.60 square kilometers
Square kilometer
0.39 square miles
Cubic foot
0.028 cubic meters
Cubic meter
35.23 cubic feet
Cubic yard
0.76 cubic meters
Cubic meter
1.35 cubic yards
Volume (or Capacity) Conversion
drop (metric) drop (UK) drop (USA) dash (UK) dash (USA) pinch (UK) pinch (US) teaspoon (UK) teaspoon (USA) desert spoon (UK) tablespoon (UK) tablespoon (USA fluid ounce (UK) fluid ounce (USA) pint (UK) pint (liquid, USA) quart (UK) quart (liquid, USA) gallon (UK) gallon (liquid, USA) in³ (cubic inch) ft³ (cubic foot) cm³ (cubic centimeter) ml (milliliter) l (liter) hl; (hectoliter) m³ (cubic meter) = drop (metric) drop (UK) drop (USA) dash (UK) dash (USA) pinch (UK) pinch (US) teaspoon (UK) teaspoon (USA) desert spoon (UK) tablespoon (UK) tablespoon (USA fluid ounce (UK) fluid ounce (USA) pint (UK) pint (liquid, USA) quart (UK) quart (liquid, USA) gallon (UK) gallon (liquid, USA) in³ (cubic inch) ft³ (cubic foot) cm³ (cubic centimeter) ml (milliliter) l (liter) hl; (hectoliter) m³ (cubic meter)
Imperial/USA unit
Metric (SI) unit
Metric (SI) unit
Imperial/USA unit
Teaspoon (UK)
5.92 milliliters
Millilitre
0.17 teaspoons (UK)
Teaspoon (US)
4.93 milliliters
0.20 teaspoons (US)
Tablespoon (UK)
17.76 milliliters
10 Millilitre
0.56 tablespoons (UK)
Tablespoon (US)
14.79 milliliters
0.68 tablespoons (US)
Fluid ounce (UK)
28.41 milliliters
100 millilitre
3.52 fluid ounces (UK)
Fluid ounce (US)
29.57 milliliters
3.38 fluid ounces (US)
Pint (UK)
0.57 liters
Litre
1.76 pints (UK)
Pint (US)
0.47 liters
2.11 pints (US)
Quart (UK)
1.14 liters
0.88 quarts (UK)
Quart (US)
0.95 liters
1.06 quarts (US)
Gallon (UK)
4.55 liters
0.22 gallon (UK)
Gallon (US)
3.79 liters
0.26 gallons (US)
Measures of volume are different for the two systems due to the Imperial ounce being slightly smaller than the US equivalent (which affects all multiples of the ounce), and also due to the UK pint having 20 ounces whereas the the US pint has only 16 ounces.
The sizes of the smaller Imperial measures (teaspoon and tablespoon) are open to interpretation. See Cooking converter for further information on these measures.
Mileage Conversion
mi/USA gal (miles per gallon) mi/Imperial gal (miles per gallon) l/100km (liters per 100km) = mi/USA gal (miles per gallon) mi/Imperial gal (miles per gallon) l/100km (liters per 100km)
Energy Conversion
in-lb (inch-pound) ft-lb (foot-pound) cal (calorie) J (Joule) kJ (Kilojoule) kWh (Kilowatthour) = in-lb (inch-pound) ft-lb (foot-pound) cal (calorie) J (Joule) kJ (Kilojoule) kWh (Kilowatthour)
Force Conversion
lb (pound) ton N (Newton) = lb (pound) ton N (Newton)
Power Conversion
in-lb/s ft-lb/s cal/s hp (horsepower) W (Watt) kW (Kilowatt) = in-lb/s ft-lb/s cal/s hp (horsepower) W (Watt) kW (Kilowatt)
Pressure Conversion
psi=lb/in² (lb per square inch) Pa=N/m² (Pascal) kPa=kN/m² (Kilopascal) bar = psi=lb/in² (lb per square inch) Pa=N/m² (Pascal) kPa=kN/m² (Kilopascal) bar
Additional References
The following provide additional information on the metric system and conversion to the metric system:
UK Metric Association
US Metric Association
International Bureau of weights and measures
The original SW for the converters was kindly made available by www.metric4us.com, but has been substantially modified by us (for example, to include both USA and Imperial measures).
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