Convert Foot-Pound-Force to Terajoules
Convert Foot-Pound-Force (ft·lbf) to Terajoules (TJ) instantly and accurately.
Conversion Formula
TJ = ft·lbf × 1.355817948e-12
About Foot-Pound-Force
A foot-pound-force (ft·lbf) is the work done by one pound-force through one foot - exactly 1.3558179483314004 J. It is the standard torque and energy unit in US engineering. Automotive engine torque: Honda Civic ~125 lb-ft; Ford F-150 EcoBoost ~500 lb-ft. Muzzle energies: .22 LR ~140 ft·lbf; .308 Winchester ~2,600 ft·lbf; .50 BMG ~14,000 ft·lbf. Diesel pile hammers deliver 15,000-600,000 ft·lbf/blow. SAE Grade 8 bolts are specified at 7-950 ft·lbf. 1 ft·lbf = 12 in·lbf = 1.35582 J = 0.32405 cal.
About Terajoules
A terajoule (TJ) is 10¹² J - the scale of nuclear yields in the kiloton range and large industrial accidents. One kiloton of TNT = 4.184 TJ; the Hiroshima bomb (15 kt) released ~62.8 TJ. The Halifax Explosion (1917) released ~3 TJ. A 500 MW coal plant consumes ~51.4 TJ/h of thermal input. Daily primary energy of Denmark is ~250-300 TJ; the UK ~3,800 TJ/day. A 1 GW nuclear reactor at 90% capacity factor generates ~77.7 TJ/day. 1 TJ = 10¹² J = 277,778 kWh = 277.78 MWh = 23.88 ktoe.
Quick Reference Table
| Foot-Pound-Force (ft·lbf) | Terajoules (TJ) |
|---|---|
| 1 ft·lbf | 1.356 × 10-12 TJ |
| 2 ft·lbf | 2.712 × 10-12 TJ |
| 5 ft·lbf | 6.779 × 10-12 TJ |
| 10 ft·lbf | 1.356 × 10-11 TJ |
| 25 ft·lbf | 3.39 × 10-11 TJ |
| 50 ft·lbf | 6.779 × 10-11 TJ |
| 100 ft·lbf | 1.356 × 10-10 TJ |