Energy Converter

Convert between chemical, electrical and physical energy units.

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Related Conversions
10 J to kWh 50 J to kWh 100 J to kWh 162 J to kWh 216 J to kWh 250 J to kWh 720 J to kWh 1,000 J to kWh 1,800 J to kWh 3,600 J to kWh 25,000 J to kWh 100,000 J to kWh
Reverse Conversions
1 kWh to J 25 kWh to J 100 kWh to J 144 kWh to J 162 kWh to J 500 kWh to J 720 kWh to J 1,000 kWh to J 2,500 kWh to J 3,600 kWh to J 25,000 kWh to J 100,000 kWh to J
More Energy Conversions
100 J to cal 1 GJ to kWh 1 GJ to MJ 1 MJ to BTU 100 kJ to kcal 1 MJ to kWh 2 GJ to MJ 2 MJ to BTU 250 cal to J 1 kWh to cal

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Popular Conversions

Kilowatt-Hours to Megajoules Megajoules to Kilowatt-Hours Joules to Calories Kilocalories to Kilojoules British Thermal Units to Joules Watt-Hours to Joules

Common Benchmarks

1 kWh 3.6 MJ
Microwave 10 minutes 0.17 kWh
100 W bulb for 1 hour 0.1 kWh
Slice of bread 330 kJ
Cup of coffee 5 kJ
Boil 1 liter water 334 kJ

Formula

kWh = J × 2.77777778e-7

Example

Example: convert 180 joules to kilowatt-hours.

180 J = 0.00005 kWh

Conversion table

joules (J) kilowatt-hours (kWh)
1 J 2.77777778e-7 kWh
2 J 5.55555556e-7 kWh
5 J 0.00000139 kWh
10 J 0.00000278 kWh
20 J 0.00000556 kWh
50 J 0.00001389 kWh
100 J 0.00002778 kWh

Explanation

These are both units.

How to convert joules to kilowatt-hours

  1. Start with the value in joules (J).
  2. Multiply it by 2.77777778e-7.
  3. The result is the measurement in kilowatt-hours (kWh).

Example: 180 J → 0.00005 kWh

Frequently Asked Questions

How much is 180 joules in kilowatt-hours?

180 joules equals 0.00005 kilowatt-hours.

What is a joule?

A joule is a unit of energy.

What is a kilowatt-hour?

A kilowatt-hour is a unit of energy.

When are joules used?

It is used when working with energy measurements.

When are kilowatt-hours used?

It is used when working with energy measurements.

Why do some conversions produce very small or very large numbers?

The result can look tiny or huge because the units are meant for very different scales. A joule is used for everyday scales, while a kilowatt-hour is used for much larger scales. That’s why 1 kilowatt-hour equals 3,600,000 joules.