Joules to Watt-hours

Convert Joules to Watt-hours. 1 J equals 0.000277778 Wh. Type a value on either side; the formula and tables below show how it works.

J
Wh
1 Joules equals
0.000277778Wh

Formula: Wh = J × 0.000277778. Example: 5 J = 0.001389 Wh.

1 Joules in every unit

Kilojoules0.001 kJ
Calories0.239006 cal
Kilocalories0.000239006 kcal
Watt-hours0.000277778 Wh
Kilowatt-hours0.000000278 kWh
BTU0.000947817 BTU
Therms0.000000009 thm
Electronvolts6,241,509,074,460,763,136 eV

Joules to Watt-hours table

JoulesWatt-hours
0.1 J0.000027778 Wh
0.25 J0.000069444 Wh
0.5 J0.000138889 Wh
1 J0.000277778 Wh
2 J0.000555556 Wh
3 J0.000833333 Wh
4 J0.001111 Wh
5 J0.001389 Wh
10 J0.002778 Wh
15 J0.004167 Wh
20 J0.005556 Wh
25 J0.006944 Wh
50 J0.013889 Wh
75 J0.020833 Wh
100 J0.027778 Wh
250 J0.069444 Wh
500 J0.138889 Wh
1,000 J0.277778 Wh
Watt-hoursJoules
0.1 Wh360 J
0.25 Wh900 J
0.5 Wh1,800 J
1 Wh3,600 J
2 Wh7,200 J
3 Wh10,800 J
4 Wh14,400 J
5 Wh18,000 J
10 Wh36,000 J
15 Wh54,000 J
20 Wh72,000 J
25 Wh90,000 J
50 Wh180,000 J
75 Wh270,000 J
100 Wh360,000 J
250 Wh900,000 J
500 Wh1,800,000 J
1,000 Wh3,600,000 J

How to convert joules to watt-hours

Wh = J × 0.000277778

Multiply the value in joules by 0.000277778. To go the other way, divide by the same number, or multiply by 3,600. For example, 5 J × 0.000277778 = 0.001389 Wh.

About the units

Joules (J). The SI unit of energy: the work done by a force of one newton over one meter.

Watt-hours (Wh). 3,600 joules. Battery capacity of phones and laptops.

Other energy conversions

Joules to Kilojoules · Joules to Calories · Joules to Kilocalories · Joules to Watt-hours · Joules to Kilowatt-hours · Joules to BTU · Joules to Therms · Joules to Electronvolts · Kilojoules to Watt-hours · Calories to Watt-hours · Kilocalories to Watt-hours · Watt-hours to Joules · Watt-hours to Kilojoules · Watt-hours to Calories · Watt-hours to Kilocalories · Watt-hours to Kilowatt-hours · Watt-hours to BTU · Watt-hours to Therms · Watt-hours to Electronvolts · Kilowatt-hours to Watt-hours · BTU to Watt-hours · Therms to Watt-hours · Electronvolts to Watt-hours

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