Convert Pound-Force to Kip
Convert Pound-Force (lbf) to Kip (kip) instantly and accurately.
Conversion Formula
kip = lbf × 0.001
About Pound-Force
The pound-force (lbf) is the gravitational force on 1 lb-mass under standard gravity - exactly 4.4482216152605 N. It dominates US structural, mechanical, and aerospace engineering: AISC and ACI structural codes use lbf and kips (1 kip = 1,000 lbf); tire pressure 'psi' means lbf/in²; engine torque in lb·ft. Aircraft thrust is quoted in lbf: the GE90-115B (Boeing 777) produces 115,300 lbf = 513 kN. Spring rates, fastener torques, and load cell calibrations across North America are in lbf. 1 lbf = 4.44822 N = 16 ozf = 32.174 pdl.
About Kip
One kip (kilo-pound) is exactly 1,000 lbf - approximately 4,448 N. It is the primary force unit in US structural engineering: AISC and ACI 318 specify column loads, beam reactions, and connection capacities in kips and kip·ft or kip·in. 'ksi' (kips per square inch) gives steel yield strength - ASTM A36 yields at 36 ksi; A992/A572 at 50 ksi. Crane capacities, prestressed concrete jacking forces, and soil bearing limits in US geotechnical practice are all in kips. 1 kip = 1,000 lbf = 4,448.22 N = 453.59 kgf.
Quick Reference Table
| Pound-Force (lbf) | Kip (kip) |
|---|---|
| 1 lbf | 0.001 kip |
| 2 lbf | 0.002 kip |
| 5 lbf | 0.005 kip |
| 10 lbf | 0.01 kip |
| 25 lbf | 0.025 kip |
| 50 lbf | 0.05 kip |
| 100 lbf | 0.1 kip |