Paper reel measurements

Linear metres on reel

  • Length = W x 1000 / (Gsm x Rwd)
  • Length = 3.1416 (D² - d²) / (4000 x t)
W Weight of reel in kg
Gsm g/m² of paper
Rwd Width of reels in m
D External diameter of reel in mm                                    
d External diameter of core in mm
t Thickness of paper in mm 

Weight in kg of a reel from diameter

  • Weight = ((D² - d²) x 3.1416 x Rwd / 4) x Rg
D external diameter of reel in m
d external diameter of core in m Rwd = Width of reels in m
Rg Specific weight of the paper in kg/m³

Weight in kg of a reel from length of sheet

  • Weight = L x Rwd x Gsm / 1000
L Length of sheet in metres
Rwd Width of reels in metres                                                    
Gsm g/m² of paper