Helpful Calculations
Price/ linear ft
$/lb / yield (sq ft/lb) x width (inches) x 12 = price/linear ft.
Price/msi
$/lb / yield (sq ft/lb) x 1000 = $ per msi
Price/roll
$/lb / yield (sq ft/lb) x width (inches) x length (feet) x 12 = $/roll
Length of roll from roll weight
lbs x yield (sq ft/lb) / width (inches) / 12 = linear feet
Length of roll from roll weight
lbs x yield (sq ft/lb) / width (inches) / 12 = linear feet
Square inches / roll
width (inches) x length (feet) x 12 = sq inches
MSI / roll
width (inches) x length (feet) x 12 / 1000 = MSI
Lbs / roll
width (inches) x length (feet) x 12 / yield (sq inches) = lbs/roll

INCHES MILLIMETERS INCHES MILLIMETERS
Decimal Fraction Decimal Fraction
0.03125 1/32″ 0.794 0.53125 17/32″ 13.494
0.0625 1/16″ 1.588 0.5625 9/16″ 14.288
0.09375 3/32″ 2.381 0.59375 19/32″ 15.081
0.125 1/8″ 3.175 0.625 5/8″ 15.875
0.15625 5/32″ 3.969 0.65625 21/32″ 16.669
0.1875 3/16″ 4.763 0.6875 11/16″ 17.463
0.21875 7/32″ 5.556 0.71875 23/32″ 18.256
0.25 1/4″ 6.35 0.75 3/4″ 19.05
0.28125 9/32″ 7.144 0.78125 25/32″ 19.844
0.3125 5/16″ 7.938 0.8125 13/16″ 20.638
0.34375 11/32″ 8.731 0.84375 27/32″ 21.431
0.375 3/8″ 9.525 0.875 7/8″ 22.225
0.40625 13/32″ 10.319 0.90625 29/32″ 23.019
0.4375 7/16″ 11.113 0.9375 15/16″ 23.813
0.46875 15/32″ 11.906 0.969 31/32″ 24.606
0.5 1/2″ 12.7 1 1 25.4

Metric Equivalents

Width

  • Microns x 0.00003937 = inches
  • MM x 0.03937 = inches
  • Cm x 0.3937 = inches

Length

  • Meters x 3.2808 = feet
  • Meters x 39.37 = Inches

Thickness

  • Microns x 3.397 = Gauge
  • Mils x 100 = Gauge
  • Inches x 100,000 = Gauge

Area

  • Square feet x 144 = square inches
  • Square yards x 1296 = square inches
  • Ream x 432,000 = square inches

Film Yield Chart

Film Type Density Yield of 1 mil Film Unit Weight of 1 mil Film
g/cc in²/lb m²/kg lb/ream g/m²
OPP 0.906 30,600 43.5 14.1 23
LLDPE (linear low Density polyethylene) 0.92 30,100 42.7 14.4 23.4
HDPE (high density polyethylene) 0.95 29,200 41.5 14.8 24.1
Hicor OHD (oriented high density polyethylene) 0.96 28,900 41 15 24.4
Biax Nylon 1.16 23,900 33.9 18.1 29.5
OPET (oriented polyester) 1.39 19,900 28.3 21.7 35.5
Cellophane 1.45 19,100 27.1 22.6 36.9