Gigajoules to Megatons of TNT (GJ → MtTNT)
Formula
1 GJ = 2.390057361376673e-7 MtTNTConversion Table
| GJ | MtTNT |
|---|---|
| 0 | 0 |
| 1.0000 | 0.00000023901 |
| 2.0000 | 0.00000047801 |
| 3.0000 | 0.00000071702 |
| 4.0000 | 0.00000095602 |
| 5.0000 | 0.0000011950 |
| 6.0000 | 0.0000014340 |
| 7.0000 | 0.0000016730 |
| 8.0000 | 0.0000019120 |
| 9.0000 | 0.0000021511 |
| 10.000 | 0.0000023901 |
| 11.000 | 0.0000026291 |
| 12.000 | 0.0000028681 |
| 13.000 | 0.0000031071 |
| 14.000 | 0.0000033461 |
| 15.000 | 0.0000035851 |
| 16.000 | 0.0000038241 |
| 17.000 | 0.0000040631 |
| 18.000 | 0.0000043021 |
| 19.000 | 0.0000045411 |
| GJ | MtTNT |
|---|---|
| 20.000 | 0.0000047801 |
| 21.000 | 0.0000050191 |
| 22.000 | 0.0000052581 |
| 23.000 | 0.0000054971 |
| 24.000 | 0.0000057361 |
| 25.000 | 0.0000059751 |
| 26.000 | 0.0000062141 |
| 27.000 | 0.0000064532 |
| 28.000 | 0.0000066922 |
| 29.000 | 0.0000069312 |
| 30.000 | 0.0000071702 |
| 31.000 | 0.0000074092 |
| 32.000 | 0.0000076482 |
| 33.000 | 0.0000078872 |
| 34.000 | 0.0000081262 |
| 35.000 | 0.0000083652 |
| 36.000 | 0.0000086042 |
| 37.000 | 0.0000088432 |
| 38.000 | 0.0000090822 |
| 39.000 | 0.0000093212 |
| GJ | MtTNT |
|---|---|
| 40.000 | 0.0000095602 |
| 41.000 | 0.0000097992 |
| 42.000 | 0.000010038 |
| 43.000 | 0.000010277 |
| 44.000 | 0.000010516 |
| 45.000 | 0.000010755 |
| 46.000 | 0.000010994 |
| 47.000 | 0.000011233 |
| 48.000 | 0.000011472 |
| 49.000 | 0.000011711 |
| 50.000 | 0.000011950 |
| 51.000 | 0.000012189 |
| 52.000 | 0.000012428 |
| 53.000 | 0.000012667 |
| 54.000 | 0.000012906 |
| 55.000 | 0.000013145 |
| 56.000 | 0.000013384 |
| 57.000 | 0.000013623 |
| 58.000 | 0.000013862 |
| 59.000 | 0.000014101 |
| GJ | MtTNT |
|---|---|
| 60.000 | 0.000014340 |
| 61.000 | 0.000014579 |
| 62.000 | 0.000014818 |
| 63.000 | 0.000015057 |
| 64.000 | 0.000015296 |
| 65.000 | 0.000015535 |
| 66.000 | 0.000015774 |
| 67.000 | 0.000016013 |
| 68.000 | 0.000016252 |
| 69.000 | 0.000016491 |
| 70.000 | 0.000016730 |
| 71.000 | 0.000016969 |
| 72.000 | 0.000017208 |
| 73.000 | 0.000017447 |
| 74.000 | 0.000017686 |
| 75.000 | 0.000017925 |
| 76.000 | 0.000018164 |
| 77.000 | 0.000018403 |
| 78.000 | 0.000018642 |
| 79.000 | 0.000018881 |
Gigajoules to Megatons of TNT Conversion
Converting Gigajoules (GJ) to Megatons of TNT (MtTNT) is a common energy and power conversion. 1 GJ equals 0 MtTNT. For example, 100 GJ is equal to 0.000024 MtTNT.
Quick Mental Math: Gigajoules to Megatons of TNT
1000000 gigajoules is 0.239 megatons of tnt, so use that as the mental anchor.
Why is converting Gigajoules to Megatons of TNT tricky?
gigajoules to megatons of tnt uses an awkward ratio, so people often round too early or move the decimal the wrong way.
Quick Reference Values
1 GJ = 0 MtTNT. 5 GJ = 0.000001 MtTNT. 10 GJ = 0.000002 MtTNT. 25 GJ = 0.000006 MtTNT. 50 GJ = 0.000012 MtTNT. 100 GJ = 0.000024 MtTNT.
What is Gigajoules?
Gigajoules (GJ) is a unit of energy and power. The gigajoule is a unit of energy equal to one billion joules (10⁹ J). One joule is the energy transferred when applying one newton of force over one meter, so a gigajoule represents a large energy quantity used in industrial and scientific applications [bipm-si-brochure]. The joule was defined in the 19th century and named after James Prescott Joule. The prefix 'giga-' was adopted internationally as part of SI prefixes in 1960 by the CGPM to denote a factor of 10⁹, formalizing the gigajoule as an SI derived unit [cgpm-resolutions]. Gigajoules are widely used in energy industries such as natural gas and electricity production, especially in Canada and Australia. They appear in energy statistics and engineering calculations per standards from BIPM and NIST [bipm-si-brochure][nist-sp-811].
What is Megatons of TNT?
Megatons of TNT (MtTNT) is a unit of energy and power. The megaton of TNT is a unit of energy equivalent to 4.184 × 10¹⁵ joules, representing the explosive energy of one million tons of TNT. It serves as a standard measure for nuclear weapon yields and large-scale explosions. This unit relates chemical energy release to a practical benchmark in military and geological contexts[nist-si-guide]. The concept of measuring explosive power in tons of TNT originated in the early 20th century. The megaton scale was formalized during the Cold War to quantify nuclear weapon yields, with official adoption in scientific literature by agencies such as the US Department of Energy in the mid-20th century[nist-si-guide]. Megatons of TNT remain the primary unit for expressing nuclear weapon yield globally, used by defense analysts and scientists in the US, Russia, and other nuclear-capable nations. The unit also appears in seismology to estimate energy released by large earthquakes and asteroid impacts[nist-si-guide].
Common Misspellings
People often search for this conversion using these alternate spellings: giga joules, giga-joules, giga joule, gigajoule, mega tons of TNT, megatonnes of TNT, megatons TNT, megaton of tnt, megaton tnt. All of these refer to the Gigajoules to Megatons of TNT conversion.