How to transform Joules come Watt-hours

To convert a joule measurement come a watt-hour measurement, division the energy by the conversion ratio.

because one watt-hour is same to 3,600 joules, you can use this an easy formula to convert:


Joules and watt-hours are both units supplied to measure up energy. Keep reading to learn more about every unit that measure.

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The joule is the power equal come the pressure on things of one newton at a street of one meter.<1> One joule is equal to the heat energy dissipated through the present of one ampere v one ohm of resistance because that one second.

One joule is likewise equal to the energy needed to relocate an electrical charge of one coulomb through a potential difference of one volt. In addition, one joule is also equal come the one watt-second.

The joule is the SI derived unit for power in the metric system. Joules deserve to be abbreviated together J; for example, 1 joule can be created as 1 J.


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

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Watt-hours space usually abbreviated together Wh, although the formally embraced expression is W·h. The abbreviation Wh is additionally sometimes used. Because that example, 1 watt-hour deserve to be written as 1 Wh, 1 W·h, or 1 Wh.

In formal expressions, the focused dot (·) or an are is offered to separate units offered to show multiplication in one expression and to protect against conflicting prefixes being misinterpreted together a unit symbol.<2>

Joule to Watt-hour switch Table

Joule measurements converted come watt-hours Joules Watt-hours
1 J 0.000278 Wh
2 J 0.000556 Wh
3 J 0.000833 Wh
4 J 0.001111 Wh
5 J 0.001389 Wh
6 J 0.001667 Wh
7 J 0.001944 Wh
8 J 0.002222 Wh
9 J 0.0025 Wh
10 J 0.002778 Wh
20 J 0.005556 Wh
30 J 0.008333 Wh
40 J 0.011111 Wh
50 J 0.013889 Wh
60 J 0.016667 Wh
70 J 0.019444 Wh
80 J 0.022222 Wh
90 J 0.025 Wh
100 J 0.027778 Wh
200 J 0.055556 Wh
300 J 0.083333 Wh
400 J 0.111111 Wh
500 J 0.138889 Wh
600 J 0.166667 Wh
700 J 0.194444 Wh
800 J 0.222222 Wh
900 J 0.25 Wh
1,000 J 0.277778 Wh
2,000 J 0.555556 Wh
3,000 J 0.833333 Wh
4,000 J 1.1111 Wh
5,000 J 1.3889 Wh
6,000 J 1.6667 Wh
7,000 J 1.9444 Wh
8,000 J 2.2222 Wh
9,000 J 2.5 Wh
10,000 J 2.7778 Wh


International office of Weights and also Measures, The global System that Units, 9th Edition, 2019, international des Poids et Mesures, The international System of systems (SI), ninth edition, 2019,

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