The gigajoule (GJ) is a unit of energy equivalent to one billion joules. It offers a convenient metric for measuring substantial energy quantities and is frequently used in contexts like natural gas and electrical energy. For instance, one gigajoule can power an average household’s energy needs for about three days, depending on energy consumption habits. Interestingly, it’s also roughly equivalent to the energy contained in 26.8 gallons of gasoline, highlighting its significance in both domestic and industrial contexts.
Beyond its everyday applications, the gigajoule also plays a critical role in scientific fields. In the realm of seismology, for example, a moderate earthquake releases energy comparable to a few gigajoules, illustrating the vast power of natural phenomena. This demonstrates how understanding gigajoules can offer insights into both human technology and the forces of nature.
The kilojoule, abbreviated as kJ, is a unit of energy in the International System of Units. While it may not be as commonly recognized as calories in everyday conversation, the kilojoule is actually the standard metric unit for quantifying energy. Fascinatingly, 1 kilojoule is equivalent to 0.239 calories, making it a handy unit for converting nutritional information, especially in countries that primarily use the metric system.
Interestingly, the term “joule” is named after the English physicist James Prescott Joule, who studied the nature of heat and discovered its relationship to mechanical work. This unit has applications far beyond nutrition, including physics, chemistry, and engineering, where it measures various types of energy transformations, from kinetic to thermal. Understanding kilojoules can deepen our appreciation of energy, highlighting the intricate balances that power our world and our bodies.
Gigajoules | Kilojoules |
---|---|
0
GJ
|
0
kJ
|
0.1
GJ
|
100000
kJ
|
0.2
GJ
|
200000
kJ
|
0.3
GJ
|
300000
kJ
|
0.4
GJ
|
400000
kJ
|
0.5
GJ
|
500000
kJ
|
0.6
GJ
|
600000
kJ
|
0.7
GJ
|
700000
kJ
|
0.8
GJ
|
800000
kJ
|
0.9
GJ
|
900000
kJ
|
1
GJ
|
1000000
kJ
|
1.1
GJ
|
1100000
kJ
|
1.2
GJ
|
1200000
kJ
|
1.3
GJ
|
1300000
kJ
|
1.4
GJ
|
1400000
kJ
|
1.5
GJ
|
1500000
kJ
|
1.6
GJ
|
1600000
kJ
|
1.7
GJ
|
1700000
kJ
|
1.8
GJ
|
1800000
kJ
|
1.9
GJ
|
1900000
kJ
|
2
GJ
|
2000000
kJ
|
2.1
GJ
|
2100000
kJ
|
2.2
GJ
|
2200000
kJ
|
2.3
GJ
|
2300000
kJ
|
2.4
GJ
|
2400000
kJ
|
2.5
GJ
|
2500000
kJ
|
2.6
GJ
|
2600000
kJ
|
2.7
GJ
|
2700000
kJ
|
2.8
GJ
|
2800000
kJ
|
2.9
GJ
|
2900000
kJ
|
3
GJ
|
3000000
kJ
|
3.1
GJ
|
3100000
kJ
|
3.2
GJ
|
3200000
kJ
|
3.3
GJ
|
3300000
kJ
|
3.4
GJ
|
3400000
kJ
|
3.5
GJ
|
3500000
kJ
|
3.6
GJ
|
3600000
kJ
|
3.7
GJ
|
3700000
kJ
|
3.8
GJ
|
3800000
kJ
|
3.9
GJ
|
3900000
kJ
|
4
GJ
|
4000000
kJ
|
4.1
GJ
|
4100000
kJ
|
4.2
GJ
|
4200000
kJ
|
4.3
GJ
|
4300000
kJ
|
4.4
GJ
|
4400000
kJ
|
4.5
GJ
|
4500000
kJ
|
4.6
GJ
|
4600000
kJ
|
4.7
GJ
|
4700000
kJ
|
4.8
GJ
|
4800000
kJ
|
4.9
GJ
|
4900000
kJ
|
5
GJ
|
5000000
kJ
|
5.1
GJ
|
5100000
kJ
|
5.2
GJ
|
5200000
kJ
|
5.3
GJ
|
5300000
kJ
|
5.4
GJ
|
5400000
kJ
|
5.5
GJ
|
5500000
kJ
|
5.6
GJ
|
5600000
kJ
|
5.7
GJ
|
5700000
kJ
|
5.8
GJ
|
5800000
kJ
|
5.9
GJ
|
5900000
kJ
|
6
GJ
|
6000000
kJ
|
6.1
GJ
|
6100000
kJ
|
6.2
GJ
|
6200000
kJ
|
6.3
GJ
|
6300000
kJ
|
6.4
GJ
|
6400000
kJ
|
6.5
GJ
|
6500000
kJ
|
6.6
GJ
|
6600000
kJ
|
6.7
GJ
|
6700000
kJ
|
6.8
GJ
|
6800000
kJ
|
6.9
GJ
|
6900000
kJ
|
7
GJ
|
7000000
kJ
|
7.1
GJ
|
7100000
kJ
|
7.2
GJ
|
7200000
kJ
|
7.3
GJ
|
7300000
kJ
|
7.4
GJ
|
7400000
kJ
|
7.5
GJ
|
7500000
kJ
|
7.6
GJ
|
7600000
kJ
|
7.7
GJ
|
7700000
kJ
|
7.8
GJ
|
7800000
kJ
|
7.9
GJ
|
7900000
kJ
|
8
GJ
|
8000000
kJ
|
8.1
GJ
|
8100000
kJ
|
8.2
GJ
|
8200000
kJ
|
8.3
GJ
|
8300000
kJ
|
8.4
GJ
|
8400000
kJ
|
8.5
GJ
|
8500000
kJ
|
8.6
GJ
|
8600000
kJ
|
8.7
GJ
|
8700000
kJ
|
8.8
GJ
|
8800000
kJ
|
8.9
GJ
|
8900000
kJ
|
9
GJ
|
9000000
kJ
|
9.1
GJ
|
9100000
kJ
|
9.2
GJ
|
9200000
kJ
|
9.3
GJ
|
9300000
kJ
|
9.4
GJ
|
9400000
kJ
|
9.5
GJ
|
9500000
kJ
|
9.6
GJ
|
9600000
kJ
|
9.7
GJ
|
9700000
kJ
|
9.8
GJ
|
9800000
kJ
|
9.9
GJ
|
9900000
kJ
|
10
GJ
|
1e+7
kJ
|
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