Note: Kilowatt-hour (kWh) is a measure of energy and horsepower (hp) is a measure of power. Therefore you can only convert kilowatt-hour (kWh) directly to horsepower hour (hph) or kilowatts (kW) directly to horsepower (hp).

1 kW = 1.3404825737 hp.

1 kWh = 1.3404825737 hph.

kW =hp

In order to convert kilowatt-hour (kWh) to horsepower (hp) you need to know the total number of hours that the engine was running for (i.e the maximum number of hours that it can run on one charge).

kWhhours
=
hp

Formula is (kWh)*(1.3404825737)/(hours) = (hp). For example, if you have a 200 kWh engine that can run for 20 hours, the power is (200)*(1.3404825737)/(20) = 13.4 hp.

Convert hp to kWh

In order to convert horsepower (hp) to kilowatt-hour (kWh) you need to know the total number of hours that the engine was running for:

hphours
=
kWh

Formula is (kWh)= (hp)*(hours)/(1.3404825737). For example, if you have a 100 hp engine that runs for 20 hours, the kWh is (100)*(20)/(1.3404825737) = 1492 kWh.