Energy Converter

Convert between chemical, electrical and physical energy units.

Energy
6
Printable Chart
Related Conversions
7 GJ to MJ 12.8 GJ to MJ 19.2 GJ to MJ 25 GJ to MJ 32 GJ to MJ 50 GJ to MJ 500 GJ to MJ 1,000 GJ to MJ 2,500 GJ to MJ 5,000 GJ to MJ 10,000 GJ to MJ 100,000 GJ to MJ
Reverse Conversions
1 MJ to GJ 6.5 MJ to GJ 10 MJ to GJ 19.2 MJ to GJ 25 MJ to GJ 50 MJ to GJ 80 MJ to GJ 100 MJ to GJ 160 MJ to GJ 1,000 MJ to GJ 10,000 MJ to GJ 25,000 MJ to GJ
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 250 cal to J

Trending Now

Days Until Halloween 200 pounds to kg Business Days Age Calculator 30 PSI to kPa Days Until New Year 1 quart to liters 5 miles to km Days Until Christmas Days Until Thanksgiving

Recent Tools

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

Laptop full charge 200 kJ
Boil 1 liter water 334 kJ
AA battery 10 kJ
Food calorie 4184 J
Slice of bread 330 kJ
Microwave 10 minutes 0.17 kWh

Formula

MJ = GJ × 1000

Example

Example: convert 8 gigajoules to megajoules.

8 GJ = 8000 MJ

Conversion table

gigajoules (GJ) megajoules (MJ)
1 GJ 1000 MJ
2 GJ 2000 MJ
5 GJ 5000 MJ
10 GJ 10000 MJ
20 GJ 20000 MJ
50 GJ 50000 MJ
100 GJ 100000 MJ

Explanation

These are both units.

How to convert gigajoules to megajoules

  1. Start with the value in gigajoules (GJ).
  2. Multiply it by 1000.
  3. The result is the measurement in megajoules (MJ).

Example: 8 GJ → 8000 MJ

Frequently Asked Questions

How much is 8 gigajoules in megajoules?

8 gigajoules equals 8000 megajoules.

How many megajoules is 1 gigajoule?

1 gigajoule equals 1000 megajoules.

How many gigajoules is 1 megajoule?

1 megajoule equals 0.001 gigajoules.

What is the difference between gigajoules and megajoules?

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 megajoules 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 1000 megajoules?

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