Over 5,000 units, and 50,000 conversions.
Try from the following Conversion Pages and Categories :
All Conversion Pages and Categories
Acceleration : Many different acceleration constants eg. g-unit, meter/square second.
Angles : Gradients, Radians, Degrees, Minutes, Seconds.
Area : Square meter, Square inch, Square foot, Square mile, Acres, Circles.
Astronomical : Astronomical unit, light-years, parsecs.
Clothing : Convert clothing sizes between many different countries.
Computers and Electronics : Various conversions and calculators related to computers and electronics.
Cooking : Various cooking volume conversions, including Drop, Dash, Pinch, Teaspoons, Tablespoons, Cups, etc. Plus other cooking conversions such as butter weight, and gas mark temperatures.
Date/Time : Several different converters and calculators related to dates and times.
Density : kg/cubic meter, lbm/cubic foot, lbm/gallon, aluminum, copper, gold, water.
Energy : Joules, Btu, calories, electronvolt, erg, watt hour.
Finance : Several calculators and conversions related to finance.
Flow Rate : Many different flowrate conversions.
Force : Dyne, gram-force, poundals, newtons, pounds.
Frequency : Hertz, cycles per second, revolutions per second, degrees per second.
Fun Stuff : Several fun and interesting calculators and conversions.
Length/Distance : Millimeters, Centimeters, Inches, Feet, Yards, Meters, Kilometers, Miles, Mils, Rods, Fathoms, Nautical Miles.
Light : Conversion calculators for illuminance and luminance.
Mapping : Many calculators and converters related to mapping and navigation.
Miscellaneous : Several calculators and conversions that didn't fit any other category.
Numbers : Number conversions and information. Base conversion, SI Standard prefixes, American and British naming conventions.
Objects and Shapes : Various calculators for finding volume, area, and surface area for various different objects and shapes.
Power : Watts, BTU/hour, foot-lbs/second, Horsepower, kilowatts.
Pressure : dyne/sq cm, Pascal, poundal/sq foot, Torr, inch H2O, inch mercury.
Speed : centimeters/second, meters/second, kilometers/hour, feet/second, feet/minute, miles/hour, knots.
Temperature : Celsius, Fahrenheit, Rankine, Reaumur, and Kelvin.
Torque : Pound-force Foot, Pound-force Inch, Kilogram-force Meter, and Newton meter.
Viscosity : Poise, Centipoise, Water, Oil, Glycerin.
Volume Liquid and Dry : Liters, Fluid Ounces, Pints, Quarts, Gallons, Milliliter/cc, Barrels.
Weight/Mass : Kilograms, Ounces, Pounds, Troy Pounds, Stones, Tons.