Besides the standard conversions, this site also offers many others such as torque, viscosity, acceleration, and shoe sizes...

Offers conversions for measurements such as Celsius to Fahrenheit, centimeters to inches, Roman numerals to Arabic numerals, light years to miles and centuries to days...

Offers homework help, practice, calculators & tools, games, and other resources designed to help persons learn about mathematics...

Large collection of tools for converting various units of weight, size, volume, and much else...