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Watt-hours to Joules converter

Convert Wh to J instantly. Type any value and get the result in joules. 1 Wh = 3,600 J.

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Energy›Wh → J
From
To
result below ↓
1 Wh=
3,600J
formula1 Wh = 3,600 J

Common watt-hours → joules

=3,600 J
=7,200 J
=18,000 J
=36,000 J
=72,000 J
=180,000 J
=360,000 J
=1,800,000 J
=3,600,000 J

Need a different value? .

Convert the other way
Joules to Watt-hours

How to convert watt-hours to joules

To convert watt-hours to joules, multiply the value by 3,600.

Formula
J = Wh × 3,600

For example:

  • →5 Wh = 18,000 J
  • →100 Wh = 360,000 J

Quick reference

  • ▸1 Wh = 3,600 J
  • ▸1 J = 0.000277778 Wh

When you need to convert Wh to J

  • ·Nutrition — converting calories to kilojoules on food labels.
  • ·Electricity bills — kWh consumption.
  • ·Heating — BTU ratings for furnaces.
  • ·Exercise — calorie burn during workouts.
  • ·Science — chemistry and physics problems.

Frequently asked

How many joules are in 1 watt-hour?
One watt-hour equals 3,600 joules.
How do I convert Wh to J in my head?
Multiply the value in watt-hours by 3,600 to get joules.
What is the formula for watt-hours to joules?
J = Wh × 3,600.
What is the reverse — how many watt-hours in 1 joule?
One joule equals 0.000277778 watt-hours.

Related conversions

Joules to Watt-hours
1 J = 0.000277778 Wh
Watt-hours to Kilojoules
1 Wh = 3.6 kJ
Watt-hours to Calories
1 Wh = 860.421 cal
Watt-hours to Kilocalories
1 Wh = 0.860421 kcal
Kilojoules to Joules
1 kJ = 1,000 J
Calories to Joules
1 cal = 4.184 J
Kilocalories to Joules
1 kcal = 4,184 J
Kilowatt-hours to Joules
1 kWh = 3,600,000 J
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