Quickly converts units: Length: mile, yard, foot, mile, meter, decimeter, centimeter, inches and millimeter. Weight: lb, oz, milligram, gram, kilogram and tonne. Temperature: celsius, farenheit, kelvin, rankine, newton, Reaumur and Romer. Volume: Gallon, fluid ounces, cubic meter and liter. Area: hectare, square meter and square foot.