How do you convert 5kW to amps if your voltage is 120?

P, the power in kW (kilowatts) is related to V (the supply voltage) and I (the current in amps) by the Power Law:

P = V x I

So, to get the current:

I = P / V

If you have something that uses 5 kW (which is the same as 5000 watts) and the source voltage is 120 V,

then the current drawn in amps = 5000 / 120 = 41.67 amps.