Watt-hours to Kilojoules Conversion

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

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1 Wh = 3.6 kJ

How to Convert Watt-hours to Kilojoules

To convert a watt-hour measurement to a kilojoule measurement, multiply the energy by the conversion ratio. One watt-hour is equal to 3.6 kilojoules, so use this simple formula to convert:

kilojoules = watt-hours × 3.6

The energy in kilojoules is equal to the watt-hours multiplied by 3.6.

For example, here's how to convert 5 watt-hours to kilojoules using the formula above.
5 Wh = (5 × 3.6) = 18 kJ

Watt-hours and kilojoules are both units used to measure energy. Keep reading to learn more about each unit of measure.

Watt-hours

The watt-hour is a measure of electrical energy equal to one watt of power over a one hour period.

Watt-hours are usually abbreviated as Wh, although the formally adopted expression is W·h. The abbreviation W h is also sometimes used. For example, 1 watt-hour can be written as 1 Wh, 1 W·h, or 1 W 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]

Kilojoules

One kilojoule is equal to 1,000 joules, which are the energy equal to the force on an object of one newton at a distance of one meter.

The kilojoule is a multiple of the joule, which is the SI derived unit for energy. In the metric system, "kilo" is the prefix for 103. Kilojoules can be abbreviated as kJ, for example 1 kilojoule can be written as 1 kJ.

Watt-hour to Kilojoule Conversion Table

Watt-hour measurements converted to kilojoules
Watt-hours Kilojoules
1 Wh 3.6 kJ
2 Wh 7.2 kJ
3 Wh 10.8 kJ
4 Wh 14.4 kJ
5 Wh 18 kJ
6 Wh 21.6 kJ
7 Wh 25.2 kJ
8 Wh 28.8 kJ
9 Wh 32.4 kJ
10 Wh 36 kJ
11 Wh 39.6 kJ
12 Wh 43.2 kJ
13 Wh 46.8 kJ
14 Wh 50.4 kJ
15 Wh 54 kJ
16 Wh 57.6 kJ
17 Wh 61.2 kJ
18 Wh 64.8 kJ
19 Wh 68.4 kJ
20 Wh 72 kJ
21 Wh 75.6 kJ
22 Wh 79.2 kJ
23 Wh 82.8 kJ
24 Wh 86.4 kJ
25 Wh 90 kJ
26 Wh 93.6 kJ
27 Wh 97.2 kJ
28 Wh 100.8 kJ
29 Wh 104.4 kJ
30 Wh 108 kJ
31 Wh 111.6 kJ
32 Wh 115.2 kJ
33 Wh 118.8 kJ
34 Wh 122.4 kJ
35 Wh 126 kJ
36 Wh 129.6 kJ
37 Wh 133.2 kJ
38 Wh 136.8 kJ
39 Wh 140.4 kJ
40 Wh 144 kJ

References

  1. Bureau International des Poids et Mesures, The International System of Units (SI), 9th edition, 2019, https://www.bipm.org/utils/common/pdf/si-brochure/SI-Brochure-9-EN.pdf