Convert Poundal feet to Pound-force feet
Convert Poundal feet (pdl·ft) to Pound-force feet (lbf·ft) instantly and accurately.
Conversion Formula
lbf·ft = pdl·ft × 0.03108095017
About Poundal feet
The poundal foot (pdl·ft) equals ≈ 0.04214 N·m, the torque unit of the absolute foot-pound-second system, where force is in poundals (1 pdl = 1 lb·ft/s²) rather than pound-force. It appeared in pre-SI British and American engineering texts and NACA aerodynamic stability reports alongside slug inertia values. 1 pdl·ft = 0.45359237 × 0.3048² N·m ≈ 0.04214 N·m ≈ 0.3730 lbf·in.
About Pound-force feet
The pound-force foot (lbf·ft) equals ≈ 1.35582 N·m, the dominant torque unit in North American automotive and mechanical engineering. SAE engine performance tests, US vehicle lug-nut torque specs (80-100 lbf·ft), and American industrial gearbox catalogs all use lbf·ft. V8 truck engines produce 400-600 lbf·ft; diesel pickups exceed 900 lbf·ft. 1 lbf·ft ≈ 1.35582 N·m = 12 lbf·in ≈ 192 ozf·in.
Quick Reference Table
| Poundal feet (pdl·ft) | Pound-force feet (lbf·ft) |
|---|---|
| 1 pdl·ft | 0.031081 lbf·ft |
| 2 pdl·ft | 0.0621619 lbf·ft |
| 5 pdl·ft | 0.155405 lbf·ft |
| 10 pdl·ft | 0.31081 lbf·ft |
| 25 pdl·ft | 0.777024 lbf·ft |
| 50 pdl·ft | 1.55405 lbf·ft |
| 100 pdl·ft | 3.1081 lbf·ft |