Unit in SI system Mass (kilogram) length (meter) time (second) current (Ampere) Temperature (Kelvin) Other system 1 inch =2.54cm 1 pound=0.45kgUnit in SI system Mass (kilogram) length (meter) time (second) current (Ampere) Temperature (Kelvin) Other system : 1 inch =2.54cm 1 pound=0.45kg