Convert Pound-Force to Metric Ton-Force
Convert Pound-Force (lbf) to Metric Ton-Force (tf) instantly and accurately.
Conversion Formula
tf = lbf × 0.00045359237
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 Metric Ton-Force
One metric tonne-force (tf) is the gravitational force on 1,000 kg under standard gravity - exactly 9,806.65 N = 9.80665 kN. It dominates international heavy engineering: crane hook capacities are rated in tf (a '50-tonne crane' lifts 50 tf = 490.3 kN); ship mooring lines, anchor holding power, and cargo lashing per IMO standards are in tf; hydraulic presses for metal extrusion and stamping in Europe and Asia are rated in tf. ISO 7531 lifting-gear working load limits (WLL) use tf. 1 tf = 1,000 kgf = 9,806.65 N = 2,204.6 lbf.
Quick Reference Table
| Pound-Force (lbf) | Metric Ton-Force (tf) |
|---|---|
| 1 lbf | 0.000453592 tf |
| 2 lbf | 0.000907185 tf |
| 5 lbf | 0.00226796 tf |
| 10 lbf | 0.00453592 tf |
| 25 lbf | 0.0113398 tf |
| 50 lbf | 0.0226796 tf |
| 100 lbf | 0.0453592 tf |