Ton-force explained

A ton-force is one of various units of force defined as the weight of one ton due to standard gravity.^[1] The precise definition depends on the definition of ton used.

Tonne-force

The tonne-force (tf or t_f)^[2] is equal to the weight of one tonne.

one tonne-force	= kilograms-force (kgf)
= kilonewtons (kN)
≈ pounds-force (lbf)[3]
≈ long tons-force[4]
≈ short tons-force[5]
≈ poundals (pdl)[6]

Long ton-force

The long ton-force is equal to the weight of one long ton.

one long ton-force	=  lbf
=  kgf
=
= 1.12 short tons-force[7]
≈  pdl[8]

Short ton-force

The short ton-force is equal to the weight of one short ton.

one short ton-force	=  lbf
=  kgf
=
≈ long tons-force[9]
≈  pdl[10]

Notes and References

1. All calculations on this page assume the following definition of standard gravity, g₀.

   g₀ =

2. The tonne-force, also known as the metric tone force, is equivalent to the megagram-force (Mgf or Mg_f) and the megapond (Mp).

3. 	= ∴
   1 tonne-force	=  lbf
   ≈  lbf

4. 1 long ton	= ∴
   1 tonne-force	= long tons-force
   ≈ long tons-force

5. 1 short ton	= ∴
   1 tonne-force	= short tons-force
   ≈ short tons-force

6. 1 pdl	=  N ∴
   1 tonne-force	= pdl
   ≈ pdl

7. 1 long ton-force	= short tons-force
   = 1.12 short tons-force

8. g0	=  ft/s2 ∴
   1 long ton-force	=  lb ×  ft/s2
   =  pdl
   ≈  pdl

9. 1 short ton-force	= long tons-force
   = long tons-force
   ≈ long tons-force

10. 1 short ton-force	=  lb ×  ft/s2
    =  pdl
    ≈  pdl