###### Asked in Home ElectricityMath and ArithmeticAppliance Voltage and Travel Issues

Home Electricity

Math and Arithmetic

Appliance Voltage and Travel Issues

# How do you calculate kilowatts per hour?

## Answer

###### Wiki User

###### January 09, 2015 8:54AM

A kilowatt hour is calculated by adding the watts together and deviding by 1000, this will give you kilowatts (kW). Then work out how many hours you are using this load for. multiply the kW by the hours and you get kWh. eg 15 lamps at 100w = 1500w/1000 = 1.5 kW. If these were left on for 6 hours then 6 x 1.5 = 9 kWh.

*Answer*

There is no such thing as a 'kilowatt per hour'. It's rather like saying 'kilometres per hour per hour', because a kilowatt is a special name given to a joule per second -in other words, it measures a rate.

## Related Questions

###### Asked in Math and Arithmetic

### How many kilowatts does a revon hair dryer per hours?

No device uses "kilowatts per hour". A watt or kilowatt is a
unit of power, not of energy. That means that the "per hour" or
"per second" is already implied - the watt refers to a "rate of
energy conversion" - not to an amount of energy. If a devices uses
a certain amount of kilowatts, it uses this amount all the time
while it is on - whether it is kept on for a second or for several
days.

###### Asked in Math and Arithmetic

### How many kilowatt per hour does a 10kilowatts generate?

There is no such thing as a "kilowatt per hour". Kilowatt is a
unit of power, not of energy. A unit of energy is kilowatt-hour.
That's kilowatt times hours, not "per" hour ("per" implies
division, not multiplication). If a generator produces 10
kilowatts, that means it produces 10 kilowatt-hours every hour.

###### Asked in Math and Arithmetic

### How many minutes are in a million years?

Calculate 1000000 x 365 [days per year] x 24 [hours per day] x
60 [minutes per hour].
Calculate 1000000 x 365 [days per year] x 24 [hours per day] x 60
[minutes per hour].
Calculate 1000000 x 365 [days per year] x 24 [hours per day] x 60
[minutes per hour].
Calculate 1000000 x 365 [days per year] x 24 [hours per day] x 60
[minutes per hour].