Length/Distance Millimeters, Centimeters, Inches, Feet, Yards, Meters, Kilometers, Miles, Mils, Rods, Fathoms, Nautical Miles, More...

Temperature Celsius, Fahrenheit, Rankine, Reaumur, and Kelvin

Speed centimeters/second, meters/second, kilometers/hour, feet/second, feet/minute, miles/hour, knots, mach, More...

Volume Liquid and Dry. Liters, Fluid Ounces, Pints, Quarts, Gallons, Milliliter/cc, Barrels, Gill, Hogshead, More...

Weight/Mass Kilograms, Ounces, Pounds, Troy Pounds, Stones, Tons, More...

Computer Convert bytes, kilobytes, megabytes, gigabytes, and More...

Date/Time Several different converters and calculators related to dates and times.

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.

Angles Gradients, Radians, Degrees, Minutes, Seconds, Points, More...

Area Square centimeter, Square meter, Square inch, Square foot, Square mile, Square Kilometer, Acres, Circles, More...

Power Watts, BTU/hour, foot-lbs/second, Horsepower, kilowatts, More...

Energy Joules, Btu, calories, electronvolt, erg, watt hour, therm, toe, tce, More...

Density kg/cubic meter, lbm/cubic foot, lbm/gallon, aluminum, copper, gold, water, More...

Force Dyne, gram-force, poundals, newtons, pounds, kgm-force, More...

Pressure dyne/sq cm, Pascal, poundal/sq foot, Torr, inch H2O, inch mercury, More...

Astronomical Astronomical unit, light-years, parsecs, More...

Numbers Number conversions and information. Base conversion, SI Standard prefixes, American and British naming conventions, and more...

Finance Several calculators and conversions related to finance

Miscellaneous Several calculators and conversions that didn't fit any other category

Fun Stuff Several fun and interesting calculators and conversions

Clothing Convert clothing sizes between many different countries.

Light Conversion calculators for illuminance and luminance.

Torque Pound-force Foot, Pound-force Inch, Kilogram-force Meter, and Newton meter

Viscosity Poise, Centipoise, Water, Oil, Glycerin, more...

Frequency Hertz, cycles per second, revolutions per second, degrees per second, radians per second, many more...

Acceleration Many different acceleration constants. g-unit, meter/square second, more...

Flow Rate Many different flowrate conversions. Includes separate pages for mass based, volume based, and mole based flowrates.