Conversion Tools Roll Weight: Using the length, width and gauge of film calculate the roll weight. Roll Length (ft.) = Roll width (inches) = Gauge (ie. 70) = Resulting roll weight (lbs) = Roll Length: Using the weight, width and gauge of film calculate the roll length. Roll weight (lbs) = Roll width (inches) = Gauge (ie. 70) = Resulting roll length (ft) = Microns to Gauge (Film Thickness Conversions) Enter the thickness in microns for corresponding gauge thickness: Microns = Gauge = Gauge to Microns (Film Thickness Conversions) Enter the thickness in Gauge for corresponding Micron thickness: Gauge = Microns =