Convert Foot-Pound-Force to Watt-Hours
Convert Foot-Pound-Force (ft·lbf) to Watt-Hours (Wh) instantly and accurately.
Conversion Formula
Wh = ft·lbf × 0.0003766160968
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 Watt-Hours
A watt-hour (Wh) is the energy delivered by 1 watt for one hour - exactly 3,600 J. It is the practical unit for small-scale electrical energy: a 10,000 mAh 5 V power bank stores 50 Wh; a laptop battery holds 50-90 Wh; a smartphone battery holds 10-15 Wh; an AA alkaline cell stores ~3 Wh. LED lamps labelled 9 W save 51 Wh/h over a 60 W incandescent. IATA dangerous-goods rules use Wh as the threshold for lithium batteries in aircraft: cells >20 Wh and batteries >100 Wh need special approval. 1 Wh = 3,600 J = 3.412 BTU.
Quick Reference Table
| Foot-Pound-Force (ft·lbf) | Watt-Hours (Wh) |
|---|---|
| 1 ft·lbf | 0.000376616 Wh |
| 2 ft·lbf | 0.000753232 Wh |
| 5 ft·lbf | 0.00188308 Wh |
| 10 ft·lbf | 0.00376616 Wh |
| 25 ft·lbf | 0.0094154 Wh |
| 50 ft·lbf | 0.0188308 Wh |
| 100 ft·lbf | 0.0376616 Wh |