The petajoule (PJ) is equal to one quadrillion (1015) joules. 210 PJ is about 50 megatons of TNT. This is the amount of energy released by the Tsar Bomba, the largest man-made nuclear explosion ever.
| Definition | Relation to SI units |
|---|---|
= 1015 joule |
| 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 |
| Symbol | Definition |
|---|---|
| ≡ | exactly equal |
| ≈ | approximately equal to |
| = | equal to |
| digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |
| 1 petajoules | = 1.0E+15 joules |
| 2 petajoules | = 2.0E+15 joules |
| 3 petajoules | = 3.0E+15 joules |
| 4 petajoules | = 4.0E+15 joules |
| 5 petajoules | = 5.0E+15 joules |