Convert Ounce-Force to Pound-Force
Convert Ounce-Force (ozf) to Pound-Force (lbf) instantly and accurately.
Conversion Formula
lbf = ozf × 0.0625
About Ounce-Force
One ounce-force (ozf) is 1/16 of a pound-force - approximately 0.2780 N. It is used for small-scale US customary force measurements: postal scales, miniature connector insertion forces, and small latch springs. Hobby servo motor torque is rated in oz·in (ounce-inches); dividing by arm length gives force in ozf. Snap, zipper, and hook-and-loop closure test gauges specify pull-off forces in ozf. Cosmetic packaging component actuation forces (lipstick, compact closures) also use ozf. 1 ozf = 1/16 lbf = 28.3495 gf = 0.27801 N.
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.
Quick Reference Table
| Ounce-Force (ozf) | Pound-Force (lbf) |
|---|---|
| 1 ozf | 0.0625 lbf |
| 2 ozf | 0.125 lbf |
| 5 ozf | 0.3125 lbf |
| 10 ozf | 0.625 lbf |
| 25 ozf | 1.5625 lbf |
| 50 ozf | 3.125 lbf |
| 100 ozf | 6.25 lbf |