Convert Long Ton-Force to Kilogram-Force
Convert Long Ton-Force (tf (UK)) to Kilogram-Force (kgf) instantly and accurately.
Conversion Formula
kgf = tf (UK) × 1016.046909
About Long Ton-Force
One long ton-force is the gravitational force on an imperial long ton (2,240 lb = 20 × 112 lb hundredweight) - approximately 9,964 N. The long ton was the traditional British ton; long ton-force appears in Royal Navy vessel displacement records, British Admiralty anchor chain standards, pre-metrication UK bridge live load codes, and Australian/South African mining bolt pull-out specifications. It sits between short ton-force (8,896 N) and metric tonne-force (9,807 N) - about 12% heavier than a short ton-force. 1 long tf = 2,240 lbf = 9,964.02 N.
About Kilogram-Force
The kilogram-force (kgf), also called the kilopond (kp), is the gravitational force on 1 kg under standard gravity - exactly 9.80665 N. It was the primary force unit in continental European engineering before SI. ISO 1000 (1973) and EU Directive 80/181/EEC deprecated it in favour of the newton. Spring and bathroom scales reading in 'kg' technically measure kgf. Older DIN and JIS materials standards give tensile strength in kgf/mm² (× 9.80665 = MPa). Hydraulic cylinder ratings in legacy European machinery use kgf or tonne-force. 1 kgf = 9.80665 N = 2.20462 lbf.
Quick Reference Table
| Long Ton-Force (tf (UK)) | Kilogram-Force (kgf) |
|---|---|
| 1 tf (UK) | 1016.05 kgf |
| 2 tf (UK) | 2032.09 kgf |
| 5 tf (UK) | 5080.23 kgf |
| 10 tf (UK) | 10160.5 kgf |
| 25 tf (UK) | 25401.2 kgf |
| 50 tf (UK) | 50802.3 kgf |
| 100 tf (UK) | 101605 kgf |