Convert Gigawatt-Hours to Megatons of TNT
Convert Gigawatt-Hours (GWh) to Megatons of TNT (Mt(TNT)) instantly and accurately.
Conversion Formula
Mt(TNT) = GWh × 0.0008604206501
About Gigawatt-Hours
A gigawatt-hour (GWh) is the energy from 1 GW for one hour - exactly 3.6 TJ. National electricity generation is reported in annual GWh: Ireland ~32,000 GWh/year; France ~496,000 GWh/year. The Hornsea One offshore wind farm (1.12 GW) generates ~4,000 GWh/year. The Bath County Pumped Storage (3 GW, USA) stores ~24 GWh. World total battery storage capacity reached ~1,600 GWh by end-2022. Energy of 1 megaton TNT ≈ 1.162 GWh. 1 GWh = 3.6 TJ = 1,000 MWh = 3.412 × 10⁹ BTU.
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
| Gigawatt-Hours (GWh) | Megatons of TNT (Mt(TNT)) |
|---|---|
| 1 GWh | 0.000860421 Mt(TNT) |
| 2 GWh | 0.00172084 Mt(TNT) |
| 5 GWh | 0.0043021 Mt(TNT) |
| 10 GWh | 0.00860421 Mt(TNT) |
| 25 GWh | 0.0215105 Mt(TNT) |
| 50 GWh | 0.043021 Mt(TNT) |
| 100 GWh | 0.0860421 Mt(TNT) |