Gigajoules to Kilotons of TNT (GJ → ktTNT)
Formula
1 GJ = 0.0002390057361376673 ktTNTConversion Table
| GJ | ktTNT |
|---|---|
| 0 | 0 |
| 1.0000 | 0.00023901 |
| 2.0000 | 0.00047801 |
| 3.0000 | 0.00071702 |
| 4.0000 | 0.00095602 |
| 5.0000 | 0.0011950 |
| 6.0000 | 0.0014340 |
| 7.0000 | 0.0016730 |
| 8.0000 | 0.0019120 |
| 9.0000 | 0.0021511 |
| 10.000 | 0.0023901 |
| 11.000 | 0.0026291 |
| 12.000 | 0.0028681 |
| 13.000 | 0.0031071 |
| 14.000 | 0.0033461 |
| 15.000 | 0.0035851 |
| 16.000 | 0.0038241 |
| 17.000 | 0.0040631 |
| 18.000 | 0.0043021 |
| 19.000 | 0.0045411 |
| GJ | ktTNT |
|---|---|
| 20.000 | 0.0047801 |
| 21.000 | 0.0050191 |
| 22.000 | 0.0052581 |
| 23.000 | 0.0054971 |
| 24.000 | 0.0057361 |
| 25.000 | 0.0059751 |
| 26.000 | 0.0062141 |
| 27.000 | 0.0064532 |
| 28.000 | 0.0066922 |
| 29.000 | 0.0069312 |
| 30.000 | 0.0071702 |
| 31.000 | 0.0074092 |
| 32.000 | 0.0076482 |
| 33.000 | 0.0078872 |
| 34.000 | 0.0081262 |
| 35.000 | 0.0083652 |
| 36.000 | 0.0086042 |
| 37.000 | 0.0088432 |
| 38.000 | 0.0090822 |
| 39.000 | 0.0093212 |
| GJ | ktTNT |
|---|---|
| 40.000 | 0.0095602 |
| 41.000 | 0.0097992 |
| 42.000 | 0.010038 |
| 43.000 | 0.010277 |
| 44.000 | 0.010516 |
| 45.000 | 0.010755 |
| 46.000 | 0.010994 |
| 47.000 | 0.011233 |
| 48.000 | 0.011472 |
| 49.000 | 0.011711 |
| 50.000 | 0.011950 |
| 51.000 | 0.012189 |
| 52.000 | 0.012428 |
| 53.000 | 0.012667 |
| 54.000 | 0.012906 |
| 55.000 | 0.013145 |
| 56.000 | 0.013384 |
| 57.000 | 0.013623 |
| 58.000 | 0.013862 |
| 59.000 | 0.014101 |
| GJ | ktTNT |
|---|---|
| 60.000 | 0.014340 |
| 61.000 | 0.014579 |
| 62.000 | 0.014818 |
| 63.000 | 0.015057 |
| 64.000 | 0.015296 |
| 65.000 | 0.015535 |
| 66.000 | 0.015774 |
| 67.000 | 0.016013 |
| 68.000 | 0.016252 |
| 69.000 | 0.016491 |
| 70.000 | 0.016730 |
| 71.000 | 0.016969 |
| 72.000 | 0.017208 |
| 73.000 | 0.017447 |
| 74.000 | 0.017686 |
| 75.000 | 0.017925 |
| 76.000 | 0.018164 |
| 77.000 | 0.018403 |
| 78.000 | 0.018642 |
| 79.000 | 0.018881 |
Gigajoules to Kilotons of TNT Conversion
Converting Gigajoules (GJ) to Kilotons of TNT (ktTNT) is a common energy and power conversion. 1 GJ equals 0.000239 ktTNT. For example, 100 GJ is equal to 0.023901 ktTNT.
Quick Mental Math: Gigajoules to Kilotons of TNT
50 gigajoules is 0.01195 kilotons of tnt, so use that as the mental anchor.
Why is converting Gigajoules to Kilotons of TNT tricky?
gigajoules to kilotons of tnt uses an awkward ratio, so people often round too early or move the decimal the wrong way.
Quick Reference Values
1 GJ = 0.000239 ktTNT. 5 GJ = 0.001195 ktTNT. 10 GJ = 0.00239 ktTNT. 25 GJ = 0.005975 ktTNT. 50 GJ = 0.01195 ktTNT. 100 GJ = 0.023901 ktTNT.
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 Kilotons of TNT?
Kilotons of TNT (ktTNT) is a unit of energy and power. A kiloton of TNT is a unit of energy equivalent to 1,000 tons of TNT, precisely defined as 4.184 × 10^12 joules. This unit quantifies explosive energy, originally based on the energy released by the detonation of TNT. It remains a standard measure in nuclear weapon yield and large explosive events [nist-cuu]. The kiloton of TNT was adopted during the mid-20th century to compare explosive yields, especially after the development of nuclear weapons in the 1940s. The convention was formalized to allow consistent communication of energy magnitudes in military and scientific contexts [nist-cuu]. Kilotons of TNT are universally used in defense, nuclear physics, and disaster impact assessments. Agencies like the US Department of Energy and the United Nations refer to this unit when describing bomb yields or explosion magnitudes [nist-cuu].
Common Misspellings
People often search for this conversion using these alternate spellings: giga joules, giga-joules, giga joule, gigajoule, kiloton TNT, kilo tons of TNT, kilotons TNT, kilo tons TNT. All of these refer to the Gigajoules to Kilotons of TNT conversion.