Megatons of TNT to Gigajoules (MtTNT → GJ)
Formula
1 MtTNT = 4184000 GJConversion Table
| MtTNT | GJ |
|---|---|
| 0 | 0 |
| 1.0000 | 4,184,000 |
| 2.0000 | 8,368,000 |
| 3.0000 | 12,552,000 |
| 4.0000 | 16,736,000 |
| 5.0000 | 20,920,000 |
| 6.0000 | 25,104,000 |
| 7.0000 | 29,288,000 |
| 8.0000 | 33,472,000 |
| 9.0000 | 37,656,000 |
| 10.000 | 41,840,000 |
| 11.000 | 46,024,000 |
| 12.000 | 50,208,000 |
| 13.000 | 54,392,000 |
| 14.000 | 58,576,000 |
| 15.000 | 62,760,000 |
| 16.000 | 66,944,000 |
| 17.000 | 71,128,000 |
| 18.000 | 75,312,000 |
| 19.000 | 79,496,000 |
| MtTNT | GJ |
|---|---|
| 20.000 | 83,680,000 |
| 21.000 | 87,864,000 |
| 22.000 | 92,048,000 |
| 23.000 | 96,232,000 |
| 24.000 | 100,420,000 |
| 25.000 | 104,600,000 |
| 26.000 | 108,780,000 |
| 27.000 | 112,970,000 |
| 28.000 | 117,150,000 |
| 29.000 | 121,340,000 |
| 30.000 | 125,520,000 |
| 31.000 | 129,700,000 |
| 32.000 | 133,890,000 |
| 33.000 | 138,070,000 |
| 34.000 | 142,260,000 |
| 35.000 | 146,440,000 |
| 36.000 | 150,620,000 |
| 37.000 | 154,810,000 |
| 38.000 | 158,990,000 |
| 39.000 | 163,180,000 |
| MtTNT | GJ |
|---|---|
| 40.000 | 167,360,000 |
| 41.000 | 171,540,000 |
| 42.000 | 175,730,000 |
| 43.000 | 179,910,000 |
| 44.000 | 184,100,000 |
| 45.000 | 188,280,000 |
| 46.000 | 192,460,000 |
| 47.000 | 196,650,000 |
| 48.000 | 200,830,000 |
| 49.000 | 205,020,000 |
| 50.000 | 209,200,000 |
| 51.000 | 213,380,000 |
| 52.000 | 217,570,000 |
| 53.000 | 221,750,000 |
| 54.000 | 225,940,000 |
| 55.000 | 230,120,000 |
| 56.000 | 234,300,000 |
| 57.000 | 238,490,000 |
| 58.000 | 242,670,000 |
| 59.000 | 246,860,000 |
| MtTNT | GJ |
|---|---|
| 60.000 | 251,040,000 |
| 61.000 | 255,220,000 |
| 62.000 | 259,410,000 |
| 63.000 | 263,590,000 |
| 64.000 | 267,780,000 |
| 65.000 | 271,960,000 |
| 66.000 | 276,140,000 |
| 67.000 | 280,330,000 |
| 68.000 | 284,510,000 |
| 69.000 | 288,700,000 |
| 70.000 | 292,880,000 |
| 71.000 | 297,060,000 |
| 72.000 | 301,250,000 |
| 73.000 | 305,430,000 |
| 74.000 | 309,620,000 |
| 75.000 | 313,800,000 |
| 76.000 | 317,980,000 |
| 77.000 | 322,170,000 |
| 78.000 | 326,350,000 |
| 79.000 | 330,540,000 |
Megatons of TNT to Gigajoules Conversion
Converting Megatons of TNT (MtTNT) to Gigajoules (GJ) is a common energy and power conversion. 1 MtTNT equals 4,184,000 GJ. For example, 100 MtTNT is equal to 418,400,000 GJ.
Quick Mental Math: Megatons of TNT to Gigajoules
Divide megatons of tnt by 1.0e+3 for gigajoules; descending tiers require division.
Why is converting Megatons of TNT to Gigajoules tricky?
Magnitude or direction confusion between megatons-of-tnt and gigajoules is the primary error source.
Quick Reference Values
1 MtTNT = 4,184,000 GJ. 5 MtTNT = 20,920,000 GJ. 10 MtTNT = 41,840,000 GJ. 25 MtTNT = 104,600,000 GJ. 50 MtTNT = 209,200,000 GJ. 100 MtTNT = 418,400,000 GJ.
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].
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].
Common Misspellings
People often search for this conversion using these alternate spellings: mega tons of TNT, megatonnes of TNT, megatons TNT, megaton of tnt, megaton tnt, giga joules, giga-joules, giga joule, gigajoule. All of these refer to the Megatons of TNT to Gigajoules conversion.