In addition to the voltage Grumpy_Mike referred to there is a gate change and a gate - drain charge both in coulombs. The calculations are not too complex but I think you would be better off looking for a Mosfet switching app note than for me to attempt to describe it here.
These characteristics have to do with how fast you can switch the MosFet. You will likely need to provide between 1 and 2 amps of peak drive to the gate to get a reasonable switching time.