Kilowatt-hours to Watt-seconds Conversion

Enter the energy in kilowatt-hours below to get the value converted to watt-seconds.

Results in Watt-seconds:
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1 kWh = 3,600,000 Ws

How to Convert Kilowatt-hours to Watt-seconds

To convert a kilowatt-hour measurement to a watt-second measurement, multiply the energy by the conversion ratio.

Since one kilowatt-hour is equal to 3,600,000 watt-seconds, you can use this simple formula to convert:

watt-seconds = kilowatt-hours × 3,600,000

The energy in watt-seconds is equal to the kilowatt-hours multiplied by 3,600,000.

For example, here's how to convert 5 kilowatt-hours to watt-seconds using the formula above.
5 kWh = (5 × 3,600,000) = 18,000,000 Ws

How Many Watt-seconds are in a Kilowatt-hour?

There are 3,600,000 watt-seconds in a kilowatt-hour, which is why we use this value in the formula above.

1 kWh = 3,600,000 Ws

Kilowatt-hours and watt-seconds are both units used to measure energy. Keep reading to learn more about each unit of measure.


A kilowatt-hour is a measure of electrical energy equal to one kilowatt, or 1,000 watts, of power over a one hour period. Kilowatt-hours are a measure of electrical work performed over a period of time, and are often used as a way of measuring energy usage by electric companies.

Kilowatt-hours are usually abbreviated as kWh, although the formally adopted expression is kW·h. The abbreviation kW h is also sometimes used. For example, 1 kilowatt-hour can be written as 1 kWh, 1 kW·h, or 1 kW h.

In formal expressions, the centered dot (·) or space is used to separate units used to indicate multiplication in an expression and to avoid conflicting prefixes being misinterpreted as a unit symbol.[1]


The watt-second is a measure of electrical energy equal to one watt of power over a one second period. One watt-second is equal to 1/3,600 of a watt-hour or one joule.

Watt-seconds are usually abbreviated as Ws, although the formally adopted expression is W·s. The abbreviation W s is also sometimes used. For example, 1 watt-second can be written as 1 Ws, 1 W·s, or 1 W s.

Kilowatt-hour to Watt-second Conversion Table

Kilowatt-hour measurements converted to watt-seconds
Kilowatt-hours Watt-seconds
0.000001 kWh 3.6 Ws
0.000002 kWh 7.2 Ws
0.000003 kWh 10.8 Ws
0.000004 kWh 14.4 Ws
0.000005 kWh 18 Ws
0.000006 kWh 21.6 Ws
0.000007 kWh 25.2 Ws
0.000008 kWh 28.8 Ws
0.000009 kWh 32.4 Ws
0.0000001 kWh 0.36 Ws
0.000001 kWh 3.6 Ws
0.00001 kWh 36 Ws
0.0001 kWh 360 Ws
0.001 kWh 3,600 Ws
0.01 kWh 36,000 Ws
0.1 kWh 360,000 Ws
1 kWh 3,600,000 Ws


  1. Bureau International des Poids et Mesures, The International System of Units (SI), 9th edition, 2019,