Convert Tons of TNT to Megatons of TNT
Convert Tons of TNT (t(TNT)) to Megatons of TNT (Mt(TNT)) instantly and accurately.
Conversion Formula
Mt(TNT) = t(TNT) × 1.000000000e-6
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.
About Megatons of TNT
A megaton of TNT (Mt(TNT)) = 10⁶ tons of TNT = exactly 4.184 PJ. The Soviet Tsar Bomba (1961) yielded ~50 Mt - the largest human-made explosion ever, with a fireball 8 km in diameter. Castle Bravo (1954) yielded ~15 Mt, 2.5× its 6 Mt design yield. Modern thermonuclear warheads typically range from 0.1-1.2 Mt. The 2011 Tōhoku earthquake released ~500 Mt in seismic energy. The Krakatoa 1883 eruption released ~200 Mt; Tambora 1815 ~33,000 Mt. 1 Mt(TNT) = 4.184 PJ = 1,162,800 MWh.
Quick Reference Table
| Tons of TNT (t(TNT)) | Megatons of TNT (Mt(TNT)) |
|---|---|
| 1 t(TNT) | 1 × 10-6 Mt(TNT) |
| 2 t(TNT) | 2 × 10-6 Mt(TNT) |
| 5 t(TNT) | 5 × 10-6 Mt(TNT) |
| 10 t(TNT) | 1 × 10-5 Mt(TNT) |
| 25 t(TNT) | 2.5 × 10-5 Mt(TNT) |
| 50 t(TNT) | 5 × 10-5 Mt(TNT) |
| 100 t(TNT) | 1 × 10-4 Mt(TNT) |