Energy Converter

Convert between chemical, electrical and physical energy units.

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Related Conversions
1 kWh to GJ 9.5 kWh to GJ 10 kWh to GJ 13.2 kWh to GJ 14.4 kWh to GJ 19.2 kWh to GJ 24 kWh to GJ 50 kWh to GJ 500 kWh to GJ 2,500 kWh to GJ 25,000 kWh to GJ 50,000 kWh to GJ
Reverse Conversions
1 GJ to kWh 10 GJ to kWh 19.2 GJ to kWh 48 GJ to kWh 50 GJ to kWh 100 GJ to kWh 120 GJ to kWh 250 GJ to kWh 1,000 GJ to kWh 2,500 GJ to kWh 5,000 GJ to kWh 25,000 GJ to kWh
More Energy Conversions
1 GJ to MJ 1 MJ to BTU 100 J to cal 1 MJ to kWh 2 GJ to MJ 2 MJ to BTU 100 kJ to kcal 1 kWh to cal 10,000 J to kJ

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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

Boil 1 liter water 334 kJ
1 kWh 3.6 MJ
Laptop full charge 200 kJ
Phone battery 40 kJ
Food calorie 4184 J
Cup of coffee 5 kJ

Formula

GJ = kWh × 0.0036

Example

Example: convert 12 kilowatt-hours to gigajoules.

12 kWh = 0.0432 GJ

Conversion table

kilowatt-hours (kWh) gigajoules (GJ)
1 kWh 0.0036 GJ
2 kWh 0.0072 GJ
5 kWh 0.018 GJ
10 kWh 0.036 GJ
20 kWh 0.072 GJ
50 kWh 0.18 GJ
100 kWh 0.36 GJ

Explanation

These are both units.

How to convert kilowatt-hours to gigajoules

  1. Start with the value in kilowatt-hours (kWh).
  2. Multiply it by 0.0036.
  3. The result is the measurement in gigajoules (GJ).

Example: 12 kWh → 0.0432 GJ

Frequently Asked Questions

How much is 12 kilowatt-hours in gigajoules?

12 kilowatt-hours equals 0.0432 gigajoules.

How many gigajoules is 1 kilowatt-hour?

1 kilowatt-hour equals 0.0036 gigajoules.

How many kilowatt-hours is 1 gigajoule?

1 gigajoule equals 277.77777778 kilowatt-hours.

What is the difference between kilowatt-hours and gigajoules?

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 gigajoules 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 0.0036 gigajoules?

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