From Duncan Campbell:
Conversion offers a powerful and comprehensive unit conversion engine, all wrapped up in an intuitive interface. A gorgeous UI makes picking units a breeze!Conversions can be "bookmarked" as favorites for rapid retrieval later.Available in 15 languages including: English, Japanese, Spanish, French, German, Italian, Korean, Norwegian, Polish, Swedish, Dutch, Chinese, Portuguese, Danish and Russian.Conversion categories include:+ Currencies:U.S. Dollar, Australian Dollar, Bahraini Dinar, Brazilian Real, British Pounds Sterling, Canadian Dollar, Chilean Peso, Chinese Yuan, Cyprus Pound, Czech Koruna, Danish Krone, Fijian Dollars, Hong Kong Dollar, Hungarian Forint, Icelandic Krona, Indian Rupee, Indonesian Rupiah, Israeli New Sheqel, Jamaican Dollars, Kuwaiti Dinar, Malaysian Ringgit, Maltese Lira, Mauritius Rupee, Mexican Peso, Moroccan Dirham, Nepalese Rupee, New Zealand Dollar, Norwegian Krone, Oman Rial, Pakistani Rupee, Polish Zloty, Qatari Rial, Russian Ruble, Saudi Riyal, Singapore Dollar, Slovak Koruna, South African Rand, South Korean Won, Sri Lanka Rupee, Swedish Krona, Swiss Franc, Taiwan New Dollar, Thai Baht, U.A. Emirates Dirham, Venezuelan Bolivar, Vietnamese+ Area:square mile, square yard, square foot, square inch, square kilometer, hectare, acre, square meter, square centimeter, square millimeter. + Energy:Btus, Foot-Pounds, Ergs, Kilowatt-Hours, Watt-Hours, Kilogram-Calories, Calories, Kilogram-Meters, Newton-Meters, Joules.+ Temperature:Celcius, Fahrenheit, Kelvin.+ Length:Mile, Mile (nautical), Yard, Foot, Inch, Kilometer, Meter, Centimeter, Millimeter.+ Weight:Short Ton (US), Pound (US), Ounce (US), Stone, Long Ton (UK), Meteric Ton, Kilogram, Gram.+ Speed:Knots, Miles/Hour, Miles/Minute, Feet/Minute, Feet/Second, Kilometers/Hour, Kilometers/Minute, Meters/Second.+ Pressure:Pounds/Square Foot, Pounds/Square Inch, Atmospheres, Bars, Centimeters of Mercury, Inches of Mercury, Kilograms/Square Meter, Pascals.+ Power:Btus/Minute, Foot-Pounds/Minute, Foot-Pounds/Second, Horsepower, Kilowatts, Watts.+ Volume:Cubic Feet, Gallon (Imperial), Gallon, Quart (US), Pint, Fluid Ounce, Cup, Tablespoon, Teaspoon, Dram, Cubic Meter, Liter.+ Time:Years, Weeks, Days, Hours, Minutes, Seconds, Milliseconds, Microseconds, Nanoseconds.+Computing:Bits, Bytes, Kilobytes, Megabytes, Gigabytes, Terabytes, Petabytes.