A gauge conversion chart can be used to determine the actual thickness of sheet metal in inches or millimeters.
Gi sheet metal gauge.
This chart covers the common and uncommon sheet metal sizes for steel aluminum and galvanized steel.
Typically the even number gauges are used more frequently.
The equivalent thicknesses differ for each gauge size standard which were developed based on the weight of the sheet for a given material.
Converting sheet metal gauge numbers to millimeters is as simple as following the chart below.
For example 18 gauge steel according to a gauge conversion chart is 0 0478 inch or 1 214 millimeter.
The equivalent thicknesses differ for each standard size of the gauge which has been developed based on the weight of the sheet for a given material.
The gauge number 18 holds no relevance to the actual measurements.
Gauge or gage dimensions are numbers that indicate the thickness of a piece of sheet and a higher number refers to a thinner sheet.
For a more comprehensive gauge chart you can check out our sheet metal gauge chart here.