Energy Converter

Convert between chemical, electrical and physical energy units.

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Related Conversions
1 GJ to kWh 1.5 GJ to kWh 2.5 GJ to kWh 10 GJ to kWh 50 GJ to kWh 100 GJ to kWh 250 GJ to kWh 1,000 GJ to kWh 2,500 GJ to kWh 5,000 GJ to kWh 50,000 GJ to kWh 100,000 GJ to kWh
Reverse Conversions
1.5 kWh to GJ 3 kWh to GJ 8 kWh to GJ 25 kWh to GJ 50 kWh to GJ 500 kWh to GJ 1,000 kWh to GJ 2,500 kWh to GJ 5,000 kWh to GJ 10,000 kWh to GJ 25,000 kWh to GJ 50,000 kWh to GJ
More Energy Conversions
1 MJ to BTU 100 J to cal 1 MJ to kWh 1 GJ to MJ 2 MJ to BTU 100 kJ to kcal 1 kWh to cal 2 GJ to MJ 10 BTU to J 250 cal 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

Phone battery 40 kJ
AA battery 10 kJ
Gasoline liter 34 MJ
Food calorie 4184 J
Microwave 10 minutes 0.17 kWh
Cup of coffee 5 kJ

Formula

kWh = GJ × 277.7777777778

Example

Example: convert 2 gigajoules to kilowatt-hours.

2 GJ = 555.55555556 kWh

Conversion table

gigajoules (GJ) kilowatt-hours (kWh)
1 GJ 277.77777778 kWh
2 GJ 555.55555556 kWh
5 GJ 1388.88888889 kWh
10 GJ 2777.77777778 kWh
20 GJ 5555.55555556 kWh
50 GJ 13888.88888889 kWh
100 GJ 27777.77777778 kWh

Explanation

These are both units.

How to convert gigajoules to kilowatt-hours

  1. Start with the value in gigajoules (GJ).
  2. Multiply it by 277.7777777778.
  3. The result is the measurement in kilowatt-hours (kWh).

Example: 2 GJ → 555.55555556 kWh

Frequently Asked Questions

How much is 2 gigajoules in kilowatt-hours?

2 gigajoules is about 555.556 kilowatt-hours.

How many kilowatt-hours is 1 gigajoule?

1 gigajoule equals 277.77777778 kilowatt-hours.

How many gigajoules is 1 kilowatt-hour?

1 kilowatt-hour equals 0.0036 gigajoules.

What is the difference between gigajoules and kilowatt-hours?

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 gigajoules and kilowatt-hours 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 gigajoule equal 277.77777778 kilowatt-hours?

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