Convert Calories to Foot-Pound-Force
Convert Calories (cal) to Foot-Pound-Force (ft·lbf) instantly and accurately.
Conversion Formula
ft·lbf = cal × 3.085960033
About Calories
A calorie (cal) - the thermochemical calorie - is exactly 4.184 J, defined as the heat to raise 1 g of water by 1°C. Standard since 1954. The calorie is the fundamental unit of heat measurement in thermochemistry: glucose combustion releases 669.9 kcal/mol; water vaporisation requires 539.7 cal/g. Bond dissociation energies in quantum chemistry are often quoted in kcal/mol. Note: the dietary Calorie (capital C) on food labels is 1 kcal = 4,184 J - a factor-of-1,000 difference that causes persistent confusion. 1 cal = 4.184 J = 1.163 × 10⁻³ Wh.
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.
Quick Reference Table
| Calories (cal) | Foot-Pound-Force (ft·lbf) |
|---|---|
| 1 cal | 3.08596 ft·lbf |
| 2 cal | 6.17192 ft·lbf |
| 5 cal | 15.4298 ft·lbf |
| 10 cal | 30.8596 ft·lbf |
| 25 cal | 77.149 ft·lbf |
| 50 cal | 154.298 ft·lbf |
| 100 cal | 308.596 ft·lbf |