Not sure what you mean, kg is the base unit. /s >The SI comprises a coherent system of units of measurement starting with seven base units, which are the secon

Not sure what you mean, kg is the base unit. /s >The SI comprises a coherent system of units of measurement starting with seven base units, which are the second (symbol s, the unit of time), metre (m, length), kilogram (kg, mass), ampere (A, electric current), kelvin (K, thermodynamic temperature), mole (mol, amount of substance), and candela (cd, luminous intensity). https://en.wikipedia.org/wiki/International_System_of_Units https://en.wikipedia.org/wiki/International_System_of_Units