Joules to Watt hours

One joule is 0.0002777778 watt hours. Energy units for food, electricity and physics. The "calorie" on a nutrition label is a kilocalorie — 1,000 of the calories used in physics.

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From

To0.0002777778

1 joule = 0.0002777778 watt hours · open this conversion

Formula

watt hours = joules × 0.000277777778

A food Calorie (capital C) is a kilocalorie. The thermochemical calorie of 4.184 J is used here.

Joules to Watt hours table

Joules	Watt hours
1 J	0.0002777778 Wh
2 J	0.0005555556 Wh
5 J	0.001388889 Wh
10 J	0.002777778 Wh
20 J	0.005555556 Wh
25 J	0.006944444 Wh
50 J	0.01388889 Wh
100 J	0.02777778 Wh
150 J	0.04166667 Wh
200 J	0.05555556 Wh
250 J	0.06944444 Wh
300 J	0.08333333 Wh
400 J	0.1111111 Wh
500 J	0.1388889 Wh
600 J	0.1666667 Wh
800 J	0.2222222 Wh
1,000 J	0.2777778 Wh
1,500 J	0.4166667 Wh
2,000 J	0.5555556 Wh
2,500 J	0.6944444 Wh

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Other energy conversions

⇄ Watt hours to Joules Joules to Kilojoules Joules to Calories Joules to Kilocalories Joules to Kilowatt hours

Frequently asked questions

▸How many watt hours are in a joule?

One joule is 0.0002777778 watt hours. watt hours = joules × 0.000277777778.

▸How do I convert joules to watt hours?

Multiply the number of joules by 0.000277777778. For example, 10 J × 0.000277777778 = 0.002777778 Wh.

▸What is the difference between joules and watt hours?

Joule (J) and Watt hour (Wh) both measure energy. Energy units for food, electricity and physics. The "calorie" on a nutrition label is a kilocalorie — 1,000 of the calories used in physics.

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