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.
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.
Kilojoules | Gigajoules |
---|---|
0
kJ
|
0
GJ
|
10
kJ
|
0.00001
GJ
|
20
kJ
|
0.00002
GJ
|
30
kJ
|
0.00003
GJ
|
40
kJ
|
0.00004
GJ
|
50
kJ
|
0.00005
GJ
|
60
kJ
|
0.00006
GJ
|
70
kJ
|
0.00007
GJ
|
80
kJ
|
0.00008
GJ
|
90
kJ
|
0.00009
GJ
|
100
kJ
|
0.0001
GJ
|
110
kJ
|
0.00011
GJ
|
120
kJ
|
0.00012
GJ
|
130
kJ
|
0.00013
GJ
|
140
kJ
|
0.00014
GJ
|
150
kJ
|
0.00015
GJ
|
160
kJ
|
0.00016
GJ
|
170
kJ
|
0.00017
GJ
|
180
kJ
|
0.00018
GJ
|
190
kJ
|
0.00019
GJ
|
200
kJ
|
0.0002
GJ
|
210
kJ
|
0.00021
GJ
|
220
kJ
|
0.00022
GJ
|
230
kJ
|
0.00023
GJ
|
240
kJ
|
0.00024
GJ
|
250
kJ
|
0.00025
GJ
|
260
kJ
|
0.00026
GJ
|
270
kJ
|
0.00027
GJ
|
280
kJ
|
0.00028
GJ
|
290
kJ
|
0.00029
GJ
|
300
kJ
|
0.0003
GJ
|
310
kJ
|
0.00031
GJ
|
320
kJ
|
0.00032
GJ
|
330
kJ
|
0.00033
GJ
|
340
kJ
|
0.00034
GJ
|
350
kJ
|
0.00035
GJ
|
360
kJ
|
0.00036
GJ
|
370
kJ
|
0.00037
GJ
|
380
kJ
|
0.00038
GJ
|
390
kJ
|
0.00039
GJ
|
400
kJ
|
0.0004
GJ
|
410
kJ
|
0.00041
GJ
|
420
kJ
|
0.00042
GJ
|
430
kJ
|
0.00043
GJ
|
440
kJ
|
0.00044
GJ
|
450
kJ
|
0.00045
GJ
|
460
kJ
|
0.00046
GJ
|
470
kJ
|
0.00047
GJ
|
480
kJ
|
0.00048
GJ
|
490
kJ
|
0.00049
GJ
|
500
kJ
|
0.0005
GJ
|
510
kJ
|
0.00051
GJ
|
520
kJ
|
0.00052
GJ
|
530
kJ
|
0.00053
GJ
|
540
kJ
|
0.00054
GJ
|
550
kJ
|
0.00055
GJ
|
560
kJ
|
0.00056
GJ
|
570
kJ
|
0.00057
GJ
|
580
kJ
|
0.00058
GJ
|
590
kJ
|
0.00059
GJ
|
600
kJ
|
0.0006
GJ
|
610
kJ
|
0.00061
GJ
|
620
kJ
|
0.00062
GJ
|
630
kJ
|
0.00063
GJ
|
640
kJ
|
0.00064
GJ
|
650
kJ
|
0.00065
GJ
|
660
kJ
|
0.00066
GJ
|
670
kJ
|
0.00067
GJ
|
680
kJ
|
0.00068
GJ
|
690
kJ
|
0.00069
GJ
|
700
kJ
|
0.0007
GJ
|
710
kJ
|
0.00071
GJ
|
720
kJ
|
0.00072
GJ
|
730
kJ
|
0.00073
GJ
|
740
kJ
|
0.00074
GJ
|
750
kJ
|
0.00075
GJ
|
760
kJ
|
0.00076
GJ
|
770
kJ
|
0.00077
GJ
|
780
kJ
|
0.00078
GJ
|
790
kJ
|
0.00079
GJ
|
800
kJ
|
0.0008
GJ
|
810
kJ
|
0.00081
GJ
|
820
kJ
|
0.00082
GJ
|
830
kJ
|
0.00083
GJ
|
840
kJ
|
0.00084
GJ
|
850
kJ
|
0.00085
GJ
|
860
kJ
|
0.00086
GJ
|
870
kJ
|
0.00087
GJ
|
880
kJ
|
0.00088
GJ
|
890
kJ
|
0.00089
GJ
|
900
kJ
|
0.0009
GJ
|
910
kJ
|
0.00091
GJ
|
920
kJ
|
0.00092
GJ
|
930
kJ
|
0.00093
GJ
|
940
kJ
|
0.00094
GJ
|
950
kJ
|
0.00095
GJ
|
960
kJ
|
0.00096
GJ
|
970
kJ
|
0.00097
GJ
|
980
kJ
|
0.00098
GJ
|
990
kJ
|
0.00099
GJ
|
1000
kJ
|
0.001
GJ
|
If you like the website, share it on social media.