Convert Kilojoules to Tons of TNT
Convert Kilojoules (kJ) to Tons of TNT (t(TNT)) instantly and accurately.
Conversion Formula
t(TNT) = kJ × 2.390057361e-7
About Kilojoules
A kilojoule (kJ) is exactly 1,000 J and is the standard energy unit for food and physical chemistry. EU, Australian, and NZ food labels are mandatory in kJ: recommended adult intake is ~8,400 kJ/day. Bond dissociation energies: C-H bond 413 kJ/mol; C=C double bond 614 kJ/mol; N≡N triple bond 945 kJ/mol. Specific heat of water: 4.184 kJ/(kg·K). A cyclist riding at 150 W for one hour expends 540 kJ. Charpy and Izod impact toughness tests record results in J and kJ. 1 kJ = 1,000 J = 239.0 cal = 0.94782 BTU = 0.27778 Wh.
About Tons of TNT
A ton of TNT is an energy unit defined as exactly 10⁹ thermochemical calories = 4.184 GJ. The Trinity test (first nuclear weapon, 1945) yielded ~21 kilotons TNT = 87.9 TJ. The Tsar Bomba yielded ~50 megatons TNT = 209 PJ - the largest human-made explosion in history. Hiroshima's Little Boy yielded ~15 kilotons = 62.8 TJ. The Tunguska 1908 airburst released ~10-15 megatons TNT. Earthquake magnitude 6.0 releases ~63 kilotons TNT equivalent in seismic energy. 1 t(TNT) = 4.184 GJ = 4,184 MJ = 1,162.8 kWh.
Quick Reference Table
| Kilojoules (kJ) | Tons of TNT (t(TNT)) |
|---|---|
| 1 kJ | 2.39 × 10-7 t(TNT) |
| 2 kJ | 4.78 × 10-7 t(TNT) |
| 5 kJ | 1.195 × 10-6 t(TNT) |
| 10 kJ | 2.39 × 10-6 t(TNT) |
| 25 kJ | 5.975 × 10-6 t(TNT) |
| 50 kJ | 1.195 × 10-5 t(TNT) |
| 100 kJ | 2.39 × 10-5 t(TNT) |