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Kilojoules to Watt-hours converter

Convert kJ to Wh instantly. Type any value and get the result in watt-hours. 1 kJ = 0.277778 Wh.

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Energy›kJ → Wh
From
To
result below ↓
1 kJ=
0.277778Wh
formula1 kJ = 0.277778 Wh

Common kilojoules → watt-hours

=0.277778 Wh
=0.555556 Wh
=1.38889 Wh
=2.77778 Wh
=5.55556 Wh
=13.8889 Wh
=27.7778 Wh
=138.889 Wh
=277.778 Wh

Need a different value? .

Convert the other way
Watt-hours to Kilojoules

How to convert kilojoules to watt-hours

To convert kilojoules to watt-hours, multiply the value by 0.277778.

Formula
Wh = kJ × 0.277778

For example:

  • →5 kJ = 1.38889 Wh
  • →100 kJ = 27.7778 Wh

Quick reference

  • ▸1 kJ = 0.277778 Wh
  • ▸1 Wh = 3.6 kJ

When you need to convert kJ to Wh

  • ·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 watt-hours are in 1 kilojoule?
One kilojoule equals 0.277778 watt-hours.
How do I convert kJ to Wh in my head?
Multiply the value in kilojoules by 0.277778 to get watt-hours.
What is the formula for kilojoules to watt-hours?
Wh = kJ × 0.277778.
What is the reverse — how many kilojoules in 1 watt-hour?
One watt-hour equals 3.6 kilojoules.

Related conversions

Watt-hours to Kilojoules
1 Wh = 3.6 kJ
Kilojoules to Joules
1 kJ = 1,000 J
Kilojoules to Calories
1 kJ = 239.006 cal
Kilojoules to Kilocalories
1 kJ = 0.239006 kcal
Joules to Watt-hours
1 J = 0.000277778 Wh
Calories to Watt-hours
1 cal = 0.00116222 Wh
Kilocalories to Watt-hours
1 kcal = 1.16222 Wh
Kilowatt-hours to Watt-hours
1 kWh = 1,000 Wh
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