Convert Kilowatts (kW) to Kilowatt-hours (kWh)

1 kW = 0 kWh

How many Kilowatt-hours in a Kilowatt?Printable chart →

Understanding the conversion from kilowatts (kW) to kilowatt-hours (kWh) can simplify energy usage assessments. The conversion factor of 1 kW equals 2.7778e-4 kWh is essential for calculating energy consumption over time.

Kilowatt (kW)

Kilowatt-hour (kWh)

0.000278

Conversion Formula

kWh = kW × 2.7778e-4

Reverse: kW = kWh × 3600

Quick mental math: To estimate quickly, divide kW by 3600 to get kWh.

Conversion Examples

1 kW × 0.000277778 =

0 kWh

1 Kilowatts = 0 Kilowatt-hours

5 kW × 0.000277778 =

0.001 kWh

5 Kilowatts = 0.001 Kilowatt-hours

10 kW × 0.000277778 =

0.003 kWh

10 Kilowatts = 0.003 Kilowatt-hours

25 kW × 0.000277778 =

0.007 kWh

25 Kilowatts = 0.007 Kilowatt-hours

50 kW × 0.000277778 =

0.014 kWh

50 Kilowatts = 0.014 Kilowatt-hours

100 kW × 0.000277778 =

0.028 kWh

100 Kilowatts = 0.028 Kilowatt-hours

Kilowatt to Kilowatt-hour Table

Quick convert your value:

kW =—kWh

Start:Step:Rows:Precision:

Kilowatt (kW)	Kilowatt-hour (kWh)	Fraction
100	0.027778	1/32
200	0.055556	1/16
300	0.083333	5/64
400	0.111111	7/64
500	0.138889	9/64
600	0.166667	11/64
700	0.194444	3/16
800	0.222222	7/32
900	0.25	1/4
1,000	0.277778	9/32
1,100	0.305556	5/16
1,200	0.333333	21/64
1,300	0.361111	23/64
1,400	0.388889	25/64
1,500	0.416667	27/64
1,600	0.444444	7/16
1,700	0.472222	15/32
1,800	0.5	1/2
1,900	0.527778	17/32
2,000	0.555556	9/16

Unit Definitions

What is a Kilowatt (kW)?

Metric (SI)Worldwide

A kilowatt (kW) is a unit of power equal to 1,000 watts. It measures the rate of energy transfer.

History

The kilowatt was introduced in the late 19th century during the expansion of electrical power generation. The term was adopted as electrical systems grew in complexity.

Current Use

Today, kilowatts are commonly used to rate the output of engines and the power consumption of electrical devices.

Learn more about Kilowatt

What is a Kilowatt-hour (kWh)?

Metric (SI)Worldwide

A kilowatt-hour (kWh) is a unit of energy equivalent to one kilowatt of power used for one hour.

History

The kilowatt-hour was established as a standard measurement as electrical grids became more widespread, allowing consumers to understand their energy usage.

Current Use

Kilowatt-hours are now the standard billing unit for energy providers, helping consumers gauge their electricity consumption.

Learn more about Kilowatt-hour

Frequently Asked Questions

How do I calculate energy consumption for my home appliances?

To calculate energy consumption, first determine the power rating of your appliance in kilowatts. For example, if you have a 2000 kW heater running for 5 hours, the calculation would be 2000 kW * 5 hours = 10000 kWh. Using the conversion factor, this is equal to 2.7778 kWh for every kW used, resulting in 27.778 kWh of energy consumed.

What does 1 kWh mean in practical terms?

One kilowatt-hour represents the energy consumed by a device running at one kilowatt for one hour. For instance, if you use a 1000 kW electric kettle for 1 hour, it would consume 1 kWh of energy. If you run it for 3 hours, that’s 3 kWh, translating into 10800 kJ of energy usage.

How can I estimate the energy cost for my workout equipment?

If your treadmill uses 2 kW and you exercise for 1 hour, you would consume 2 kWh of energy, which is about 0.555 kWh when using the conversion factor. If your energy cost is $0.12 per kWh, your workout would cost approximately $0.24 for that hour of usage.

How is energy consumption measured in electric vehicles?

Electric vehicles often use kilowatt-hours to describe their energy usage. If your EV consumes 15 kWh per 100 km, driving 200 km would require 30 kWh. This is about 108000 kJ of energy, which can be converted from 10 kW if the vehicle runs at that power level for 3 hours.

How can I calculate the energy needed for a construction site?

For a construction site using several power tools, if each tool consumes 5 kW and is used for 8 hours, the total energy consumption would be 40 kWh. Converting that, it’s approximately 111 kJ. Knowing the rate of energy consumed helps in budgeting and efficient energy management.

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