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Gigajoules to Joules Converter

Convert gigajoules to joules and back instantly with formula and common values.

GJ

Joules

19,000,000,000

J

19 GJ = 19,000,000,000 J

J = GJ × 1,000,000,000

Gigajoules to Joules: 1 GJ equals 1.00000e+9 J. To convert gigajoules to joules, multiply by 1.00000e+9 (J = GJ × 1,000,000,000). For example, 10 GJ = 1.00000e+10 J.

How to Convert Gigajoules to Joules

To convert from gigajoules to joules, multiply the value by 1.00000e+9. The conversion is linear, meaning doubling the input doubles the output.

Conversion Formula

  • Gigajoules to Joules: J = GJ × 1,000,000,000
  • Joules to Gigajoules: GJ = J ÷ 1,000,000,000

Gigajoules to Joules Conversion Chart

Gigajoules (GJ)Joules (J)
0.1100000000
0.25250000000
0.5500000000
11.00000e+9
22.00000e+9
33.00000e+9
55.00000e+9
101.00000e+10
202.00000e+10
252.50000e+10
505.00000e+10
1001.00000e+11
2502.50000e+11
10001.00000e+12

Understanding the Units

What is a Gigajoule?

A gigajoule equals one billion joules (10⁹ J).

Common contexts: natural gas billing, large-scale energy reporting.

What is a Joule?

The joule is the SI derived unit of energy, equal to the work done by a force of one newton acting through a distance of one meter (1 J = 1 N·m = 1 W·s).

Named after James Prescott Joule (1818–1889), the English physicist who demonstrated the mechanical equivalent of heat.

Common contexts: physics, chemistry, engineering.

Real-World Reference Points

Item Gigajoules (GJ) Joules (J)
Energy to lift an apple 1 m1.000e-91
Heart beat (resting)1.000e-91
AA battery (alkaline)9.000e-69000

Related

FAQ

How do I convert gigajoules to joules?

Multiply by 1,000,000,000. For example, 19 GJ × 1,000,000,000 = 19,000,000,000 J.

What is the formula for gigajoules to joules?

The formula is: J = GJ × 1,000,000,000.

How many joules are in one gigajoule?

One gigajoule equals 1,000,000,000 joules.

How many joules are in 1 gigajoul?

1 GJ equals 1.00000e+9 J.

How do you convert gigajoules to joules?

Multiply the gigajoul value by 1.00000e+9. Formula: J = GJ × 1,000,000,000.

How many joules are in 5 gigajoules?

5 GJ = 5.00000e+9 J.

How do you convert joules back to gigajoules?

Use the inverse formula: GJ = J ÷ 1,000,000,000. For example, 1 J = 1.00000e-9 GJ.

What is the difference between Gigajoul and Joul?

A gigajoule equals one billion joules (10⁹ J). The joule is the SI derived unit of energy, equal to the work done by a force of one newton acting through a distance of one meter (1 J = 1 N·m = 1 W·s).