Energy Converter

Convert between chemical, electrical and physical energy units.

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Related Conversions
1 kWh to kJ 5.5 kWh to kJ 8 kWh to kJ 10 kWh to kJ 20 kWh to kJ 50 kWh to kJ 100 kWh to kJ 250 kWh to kJ 500 kWh to kJ 1,000 kWh to kJ 10,000 kWh to kJ 50,000 kWh to kJ
Reverse Conversions
4 kJ to kWh 4.5 kJ to kWh 5 kJ to kWh 5.5 kJ to kWh 10 kJ to kWh 20 kJ to kWh 100 kJ to kWh 500 kJ to kWh 1,000 kJ to kWh 2,500 kJ to kWh 10,000 kJ to kWh 50,000 kJ to kWh
More Energy Conversions
1 MJ to BTU 100 J to cal 1 GJ to kWh 1 GJ to MJ 2 MJ to BTU 100 kJ to kcal 1 MJ to kWh 2 GJ to MJ 10 BTU to J

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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

AA battery 10 kJ
1 kWh 3.6 MJ
Cup of coffee 5 kJ
Phone battery 40 kJ
Slice of bread 330 kJ
Boil 1 liter water 334 kJ

Formula

kJ = kWh × 3600

Example

Example: convert 5 kilowatt-hours to kilojoules.

5 kWh = 18000 kJ

Conversion table

kilowatt-hours (kWh) kilojoules (kJ)
1 kWh 3600 kJ
2 kWh 7200 kJ
5 kWh 18000 kJ
10 kWh 36000 kJ
20 kWh 72000 kJ
50 kWh 180000 kJ
100 kWh 360000 kJ

Explanation

These are both units.

How to convert kilowatt-hours to kilojoules

  1. Start with the value in kilowatt-hours (kWh).
  2. Multiply it by 3600.
  3. The result is the measurement in kilojoules (kJ).

Example: 5 kWh → 18000 kJ

Frequently Asked Questions

How much is 5 kilowatt-hours in kilojoules?

5 kilowatt-hours equals 18000 kilojoules.

How many kilojoules is 1 kilowatt-hour?

1 kilowatt-hour equals 3600 kilojoules.

How many kilowatt-hours is 1 kilojoule?

1 kilojoule equals 0.000277777778 kilowatt-hours.

What is the difference between kilowatt-hours and kilojoules?

Both measure energy in SI. The main difference is usually scale: some units are convenient for smaller values, while others are used to express larger values more practically.

Where are kilowatt-hours and kilojoules used?

They are used in physics and engineering to measure work, energy, and heat; the most practical unit depends on the magnitude.

Why does 1 kilowatt-hour equal 3600 kilojoules?

Because the units are defined with a fixed relationship. To convert kilowatt-hours to kilojoules, multiply by that factor.