NiftyRecipe Online energy conversion
cal/kWh 0.000001 MJ/kWh 0.277778 cal/MJ 0.000004 cal/kJ 0.004184 kWh/MJ 3.6 BTU/kJ 1.055056
Wh / J

Watt-hour to Joule converter

1 Wh = 3600 J

This is the Watt-hour to Joule converter. 1 Wh = 3600.000000000383 J.

Enter a value and click Calculate - opens the page with the new result

Common values

joule to watt-hour 2 watt-hours in joule 3 watt-hours in joule 4 watt-hours in joule 5 watt-hours in joule 6 watt-hours in joule 8 watt-hours in joule 10 watt-hours in joule 12 watt-hours in joule 15 watt-hours in joule 20 watt-hours in joule

Same amount, other units

1 watt-hour → kcal

Related converters

Wh → kcal
Formula: watt-hour to joule

J = Wh × 3600 (1 WH = 3600 J)

Reference values: watt-hour → joule
Wh J
1 Wh 3600 J
100 Wh 360000 J
200 Wh 720000 J
500 Wh 1800000 J
1000 Wh 3600000 J
2000 Wh 7200000.000001 J
Common conversions
1 Wh → 3600 J 2 Wh → 7200 J 3 Wh → 10800 J 4 Wh → 14400 J 5 Wh → 18000 J 6 Wh → 21600 J 8 Wh → 28800 J 10 Wh → 36000 J 12 Wh → 43200 J 15 Wh → 54000 J 20 Wh → 72000 J 25 Wh → 90000 J
FAQ for Wh → J
How many kcal in 1 kWh?

About 860.4 kcal (thermochemical, since 1 kWh = 3.6 MJ). See the live factor on this page.

Formula?

J = Wh × 3600 (1 WH = 3600 J)

Reverse?

1 joule ≈ 0.000278 watt-hour.

How much is 1 watt-hour in joule?

3600 joule. Factor 1 watt-hour = 3600 joule.

Is kWh the same as a food calorie?

No. kWh is electrical energy; kcal is common on food labels. We only convert physical energy equivalents.

How the Watt-hour to Joule converter works

This hub describes the pair, not a single number.

NiftyRecipe shows the factor and selected amount pages.