metre length kilogram mass second time ampere electric-current kelvin thermodynamic-temperature temperature mole molecular-weight amount-of-substance candela luminous-intensity radian angle degree steradian hertz newton frequency force weight pascal pressure joule watt coulomb volt farad ohm siemens weber tesla henry celsius lumen lux becquerel gray sievert katal energy work heat power radiant-flux electric-charge voltage electric-capacitance electric-resistance magnetic-flux inductance luminous-flux illuminance radioactivity absorbed-dose equivalent-dose catalytic-activity deca hecto kilo mega giga tera peta exa zetta yotta deci centi milli micro nano pico femto atto zepto yocto