There are 6 base units that are supported:
s for second [time]m for meter [distance]g for gram [mass]A for ampere [current]K for kelvin [temperature]cd for candela [light intensity]We decided not to support mol for mole because it is already a number. There are also some composite/other units we decided to support for conveniency:
rad for radian and deg for degree [angle]sr for steradian and deg2 for square degree [angle but 3d]Hz for hertz [frequency]N for newton [force]Pa for pascal [pressure]J for joule [energy/work]W for watt [power]V for volt [voltage]F for farad [capacitance]Ω/ohm for ohm [resistance]Hz for hertz [frequency]Hz for hertz [frequency]