A mil is a form of measurement to compare thicknesses of a product. When measuring plastic and paper a mil is equivalent to 1/1000 of an inch.
To convert the Gauge of a product multiply the number of Mils by 100. A gauge is a measurement of thickness to compare products.
For Example Product: Recloseable Bags 2 Mil
Converting Mil to Gauge:
2Mil x 100=200 Guage
For Example Mil to Inches
2 Mil / 1000 = .002 Inches