Watts (W) to kilowatt-hour (Kwh) Conversion Calculator

Convert kilowatts to kilowatt-hours with our kW to kWh calculator, plus learn the formula used for kW to kWh conversions. Watts to Kwh formula Enter Real Power (P) in Watts (W) and Time (t) in hours (hrs) and press the Calculate button to get the Energy (E) in Kilowatt-hours (kWh).

Watts To Kwh Calculator

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Conversion using the Watts to Kwh Formula

Watts to Kwh Calculation formula

Energy E in Kilowatt-hours Kwh is calculated as the Real Power p In watts w, times the period t in hours hrs. Plug these values into the formula:

Energy(E) = Real Power(P) × Time(hours) 1000

or, E(Kwh) = P(W) × T(hrs) 1000

or, Kwh = Watts × hrs 1000

For Example, Let’s find the KWh of 2000w for 5 hours.

How to use Watts to Kwh Calculator?

To use the above "Watts to Kwh Conversion Calculator" follow the below steps:

1. Enter Real Power: Input the Real Power in watts or Load watts value in the specific input box. You can enter the value in millivolts mw, Watts W, kilowatts KW, & Megawatts MW by choosing the appropriate option from the dropdown.

2. Enter Time: Input the time in Seconds sec value in the specific input box. You can enter the value in Seconds, or Hours by choosing the appropriate option from the dropdown.

Fig-2: How to Use Watts to KWh Calculator

3. Reset: Click the Reset If you want to reset the calculator to perform another conversion, you can click the Reset button, and all input fields will be cleared.

4. Calculate: Click the Calculate button to obtain the results. The calculated results will be displayed in the Results: section.

5. Swap: If you want to Swap the calculated to Exchange conversion, you can click the Swap button, and Calculate will be Exchange.

6. Result: The calculated "Result" will be displayed in the respective Result In output KWh output field.

Watts to Kwh or Wh Comparison and Sizing Table

Input		Output
watts [W]	hours [hr]	Kilowatt-hours [Kwh]	Watt-hours [wh]
100 W	1 hr	0.100 Kwh	100 wh
200 W	1 hr	0.200 Kwh	200 wh
300 W	1 hr	0.300 Kwh	300 wh
400 W	1 hr	0.400 Kwh	400 wh
500 W	1 hr	0.500 Kwh	500 wh
600 W	1 hr	0.600 Kwh	600 wh
700 W	1 hr	0.700 Kwh	700 wh
800 W	1 hr	0.800 Kwh	800 wh
900 W	1 hr	0.900 Kwh	900 wh
1000 W	1 hr	1 Kwh	1000 wh
1100 W	1 hr	1.100 Kwh	1100 wh

Frequently Asked Questions - FAQs for Watts to KWh Calculator

What is a Kilowatt?

Since a watt is a relatively small unit of electricity, it is common for it to be measured in multiples, like a kilowatt (kW). A kilowatt, as we mentioned, is just 1,000 watts (W).

What is Energy?

Energy is defined as the product of power and time. For constant value, it is expressed as: energy = power × time

What is kWh?

Kilowatts-hour (kWh) is the unit used to express the energy (E) consumption of an appliance or load.

What is 2 kWh?

2 kilowatt-hour is defined as the amount of work done or energy consumed when a device of Real power kilowatt is used for 2 hours at rated voltage. It is the measurement of electrical energy equivalent to the Real power (P) consumption.

How many kWh is 12 unit?

12 unit of electricity = 12 kWh. The electricity used is generally charged for in 'unit of electricity'. Killowatt-hours is the product of watts × time (1 kilowatt = 1000 watts). A 4-kilowatt heater switched on for 3 hours will have used 12 kilowatt-hours of electricity.

About the Author

Md Jony Islam

Jony is a passionate writer and web developer. He enjoys sharing insights about technology, web development, and design. When he's not writing, he loves hiking and exploring the outdoors.

Watts (W) to kilowatt-hour (Kwh) Conversion Calculator | Watts to Kwh Convert | Watts to Kwh formula