# Kilojoules to Watt-hours Conversion

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

Results in Watt-hours: 1 kJ = 0.277778 Wh

## How to Convert Kilojoules to Watt-hours

To convert a kilojoule measurement to a watt-hour measurement, multiply the energy by the conversion ratio. One kilojoule is equal to 0.277778 watt-hours, so use this simple formula to convert:

watt-hours = kilojoules × 0.277778

The energy in watt-hours is equal to the kilojoules multiplied by 0.277778.

For example, here's how to convert 5 kilojoules to watt-hours using the formula above.
5 kJ = (5 × 0.277778) = 1.388889 Wh

## 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-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.

## Kilojoule to Watt-hour Conversion Table

Kilojoule measurements converted to watt-hours
Kilojoules Watt-hours
1 kJ 0.277778 Wh
2 kJ 0.555556 Wh
3 kJ 0.833333 Wh
4 kJ 1.1111 Wh
5 kJ 1.3889 Wh
6 kJ 1.6667 Wh
7 kJ 1.9444 Wh
8 kJ 2.2222 Wh
9 kJ 2.5 Wh
10 kJ 2.7778 Wh
11 kJ 3.0556 Wh
12 kJ 3.3333 Wh
13 kJ 3.6111 Wh
14 kJ 3.8889 Wh
15 kJ 4.1667 Wh
16 kJ 4.4444 Wh
17 kJ 4.7222 Wh
18 kJ 5 Wh
19 kJ 5.2778 Wh
20 kJ 5.5556 Wh
21 kJ 5.8333 Wh
22 kJ 6.1111 Wh
23 kJ 6.3889 Wh
24 kJ 6.6667 Wh
25 kJ 6.9444 Wh
26 kJ 7.2222 Wh
27 kJ 7.5 Wh
28 kJ 7.7778 Wh
29 kJ 8.0556 Wh
30 kJ 8.3333 Wh
31 kJ 8.6111 Wh
32 kJ 8.8889 Wh
33 kJ 9.1667 Wh
34 kJ 9.4444 Wh
35 kJ 9.7222 Wh
36 kJ 10 Wh
37 kJ 10.28 Wh
38 kJ 10.56 Wh
39 kJ 10.83 Wh
40 kJ 11.11 Wh

## 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