Film Calculations & Conversions
Calculate roll weight, diameter, footage, and area, and convert thickness, yield, strength, and barrier units in seconds.
Results update as you type. Enter plain numbers; commas are ignored. Questions? Email info@pennpac.com or call 717-664-4040.
Roll Calculators
Size a roll: outside diameter, weight, footage and area.
Outside Diameter of a Roll
Find the finished roll OD from the footage on the roll, core size and material thickness.
Weight of a Roll
Estimate roll weight from footage, web width and yield, including the core.
6 in cores add 0.15 lb per inch of width. All other cores add 0.08.
Footage of a Roll
Find the linear footage on a roll from its outside diameter, thickness and core size.
Total Area of a Roll
Find total area from total footage and web width.
Weight from Total Area
Find material weight from total area and yield.
Thickness
Convert between mils, microns and gauge.
- microns
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- gauge
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- mils
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- gauge
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- mils
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- microns
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Yield
Convert film yield between metric and imperial.
- in²/lb
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- m²/kg
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Seal Strength
Convert seal strength across g, gf and N test widths.
- gf/in
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- g/25mm
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- gf/in
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- g/15mm
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- g/15mm
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- N/15mm
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Tensile Strength
Convert tensile strength to and from psi. N/mm² also covers MN/m².
- psi
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- kg/mm²
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- psi
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- kg/cm²
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- psi
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- N/mm²
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Oxygen Transmission Rate
Convert OTR between metric and imperial area bases.
- cc/in²
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- cc/100 in²
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- cc/m²
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- cc/m²
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Water Vapor Transmission Rate
Convert WVTR between metric and imperial area bases.
- g/in²
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- g/100 in²
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- g/m²
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- g/m²
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Metric to Standard
Quick millimeter and inch conversion.
- in
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- mm
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Found the Results, Need the Substrate?
Whether you need pricing, samples for testing, or help with an order, our team is ready to help.
Technical Quote
Pricing for custom widths and program volumes. Send an RFQ and we will follow up with details.
Request Samples
Test PennPac film quality on your lines. We provide material samples for compatibility testing.
Direct Support
Talk with our team about your application, material options, or order timing.