Plastic Film Resources
Calculators
Roll Calculator
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spreadsheet
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 in/lb) / width (inches) = 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
Conversions
| 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
Thickness
- Microns x 3.397 = Gauge
- Mils x 100 = Gauge
- Inches x 100,000 = Gauge
Length
- Meters x 3.2808 = feet
- Meters x 39.37 = Inches
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 |
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