Convert Inch-Pound-Force to Megatons of TNT
Convert Inch-Pound-Force (in·lbf) to Megatons of TNT (Mt(TNT)) instantly and accurately.
Conversion Formula
Mt(TNT) = in·lbf × 2.700402223e-17
About Inch-Pound-Force
An inch-pound-force (in·lbf) is the work done by one pound-force through one inch - exactly 0.11298482902761670 J (= 1/12 ft·lbf). It is the dominant torque unit for small fasteners and precision instruments in the US: a #6-32 screw in aluminium is torqued to 4-6 in·lbf; a dental implant abutment screw to ~25-30 Ncm (2.2-2.7 in·lbf). Hobby servo motor torque is quoted in oz·in (1 in·lbf = 16 oz·in). Bicycle stem bolts are typically 4-6 Nm (35-53 in·lbf). 1 in·lbf = 0.11298 J = 1/12 ft·lbf = 11.298 Ncm.
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
| Inch-Pound-Force (in·lbf) | Megatons of TNT (Mt(TNT)) |
|---|---|
| 1 in·lbf | 2.7 × 10-17 Mt(TNT) |
| 2 in·lbf | 5.401 × 10-17 Mt(TNT) |
| 5 in·lbf | 1.35 × 10-16 Mt(TNT) |
| 10 in·lbf | 2.7 × 10-16 Mt(TNT) |
| 25 in·lbf | 6.751 × 10-16 Mt(TNT) |
| 50 in·lbf | 1.35 × 10-15 Mt(TNT) |
| 100 in·lbf | 2.7 × 10-15 Mt(TNT) |