The exajoule (EJ) is equal to 1018 (one quintillion) joules. The 2011 Tōhoku earthquake and tsunami in Japan had 1.41 EJ of energy according to its rating of 9.0 on the moment magnitude scale. Yearly U.S. energy consumption amounts to roughly 94 EJ.
| quad | gallon-atmosphere (imperial) | terajoule | foot-poundal | yottajoule | horsepower-hour | gallon-atmosphere (US) | gigajoule |
|---|---|---|---|---|---|---|---|
| 1 | 2.290449966093 × 1015 | 1,055,055.85262 | 2.5036855629267 × 1019 | 1.05505585262 × 10-6 | 393,014,778,922.23 | 2.750715716152 × 1015 | 1,055,055,852.62 |
| 4.3659543530906 × 10-16 | 1 | 4.6063256925 × 10-10 | 10,930.9768822 | 4.6063256925 × 10-22 | 0.0001716 | 1.2009499 | 4.6063256925 × 10-7 |
| 9.4781712031332 × 10-7 | 2,170,927,691.084 | 1 | 23 730 360 404 232 | 1.0 × 10-12 | 372,506.1359986 | 2,607,175,448.8838 | 1 000 |
| 3.9941117798796 × 10-20 | 9.148313190797 × 10-5 | 4.2140110093805 × 10-14 | 1 | 4.2140110093805 × 10-26 | 1.5697449581601 × 10-8 | 0.0001099 | 4.2140110093805 × 10-11 |
| 947,817.1203133 | 2.170927691084 × 1021 | 1 000 000 000 000 | 2.3730360404232 × 1025 | 1 | 3.7250613599864 × 1017 | 2.6071754488838 × 1021 | 1.0 × 1015 |
| 2.5444335776439 × 10-12 | 5,827.8978016 | 2.684519537696 × 10-6 | 63,704,616.141728 | 2.684519537696 × 10-18 | 1 | 6,999.0134307 | 0.0026845 |
| 3.6354174810871 × 10-16 | 0.8326742 | 3.835568490138 × 10-10 | 9,101.9422626 | 3.835568490138 × 10-22 | 0.0001429 | 1 | 3.835568490138 × 10-7 |
| 9.4781712031332 × 10-10 | 2,170,927.691084 | 0.001 | 23,730,360,404.232 | 1.0 × 10-15 | 372.5061360 | 2,607,175.4488838 | 1 |
| 1 exajoules = 1.0E+18 joules |
| 2 exajoules = 2.0E+18 joules |
| 3 exajoules = 3.0E+18 joules |
| 4 exajoules = 4.0E+18 joules |
| 5 exajoules = 5.0E+18 joules |