How do calculate kgs to Yards (Knit fabric)

How do calculate kgs to Yards (Knit fabric)

Fabric GSM   = 140
Fabric width   =  45"
Fabric Weight =  0.5 kg

Rules-1:
Fabric length  =  Fabric weight (kg) / ( Fab width X Fab GSM /1550 / 1000)
Fabric length  =  0.5 / {(45 × 140) / 1550 / 1000}
Fabric length  =  0.5 / 0.00406451612
Fabric length  = 123" (where the fab width is 45" open)
Fabric length  = 3.417 yards    (123/36")

Rules-2:
Fabric Length (Yds) = ( Fabric weight (kg) × 21,456 ) / ( Fabric width × Fabric GSM )
Fabric Length (Yds) = ( 0.5 × 21,456 ) / ( 45 × 140 )
Fabric Length (Yds) = ( 10,728 ) / ( 6300 )
Fabric Length (Yds) = 1.7 yards


Rules-3:
Fabric Length (Yds) = Fabric weight / Fabric width / GSM X 1550 X 1000





How do calculate Yards to kgs (Knit fabric)

Fabric length = 3.3611 yards (121 ")
Fabric Width = 45 "
Fabric GSM = 140


Rules-1:  If Fabric length (Inch)
Fabric weight (kg) = Fabric length (inch) × Fabric width × GSM / 1550 / 1000

= 121" × 45" × 140 /1550 / 1000
= 762300 /1550 /1000
= 0.49180645161 kgs (weight of the followings fabric)

Rules-2:  If Fabric length (Yards)
Fabric weight (kg) = Fabric length (Yard) × Inch per yard × Fabric width × GSM / 1550 / 1000
Fabric weight (kg) = 3.3611 × 36 × 45" × 140 / 1550 / 1000
Fabric weight (kg) = 0.4918048258 kg 

Thanks By Rubel