In Windows 7 you don't have to rely on search engines or downloadable software to perform conversions between units of power, time, volume, and mass. Just use the built-in calculator.

1. Open the Calculator - click the Start button, select "All Programs", "Accessories", then "Calculator".


2. When the Calculator appears select the "View" menu then "Unit Conversion". Or, press Ctrl + U.

3. A unit conversion pane appears to the right of the calculator. Underneath "Select the type of unit you want to convert", click the pull-down and select your unit type.

4. Underneath "From" type in the value of the beginning unit.

5. Underneath the value of the beginning unit, click the pull-down to choose the unit type.

6. Below "To", click the pull-down to choose the ending unit type.

When all values have been selected, the text box below "To" shows the value of the calculation. You can select the value with your mouse, then select "Edit" - "Copy" (or press Ctrl + C) to copy the resulting value. It can then be pasted into the main calculator window, Notepad, a word processing document, etc.

Following are the supported unit types:

Angle
------------------------------
Degree
Gradian
Radian

Area
------------------------------
Acres
Hectares
Square centimeter
Square feet
Square inch
Square kilometer
Square meters
Square mile
Square millimeter
Square yard

Energy
------------------------------
British Thermal Unit
Calorie
Electron-volts
Foot-pound
Joule
Kilocalorie
Kilojoule

Length
------------------------------
Angstrom
Centimeters
Chain
Fathom
Feet
Hand
Inch
Kilometers
Link
Meter
Microns
Mile
Millimeters
Nanometers
Nautical miles
PICA
Rods
Span
Yard

Power
------------------------------
BTU/minute
Foot-pound/minute
Horsepower
Kilowatt
Watt

Pressure
------------------------------
Atmosphere
Bar
Kilo Pascal
Millimeter of mercury
Pascal
Pound per square inch (PSI)

Temperature
------------------------------
Degrees Celsius
Degrees Fahrenheit
Kelvin

Time
------------------------------
Day
Hour
Microsecond
Millisecond
Minute
Second
Week

Velocity
------------------------------
Centimeter per second
Feet per second
Kilometer per hour
Knots
Mach (at std. atm)
Meter per second
Miles per hour

Volume
------------------------------
Cubic centimeter
Cubic feet
Cubic inch
Cubic meter
Cubic yard
Fluid ounce (UK)
Fluid ounce (US)
Gallon (UK)
Gallon (US)
Liter
Pint (UK)
Pint (US)
Quart (UK)
Quart (US)

Weight / Mass
------------------------------
Carat
Centigram
Decigram
Dekagram
Gram
Hectogram
Kilogram
Long ton
Milligram
Ounce
Pound
Short ton
Stone
Tonne

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