How to Convert a Steel Gauge to Thickness
- 1). Determine which specific type of steel the sheet is made of, e.g. sheet steel, galvanized steel or stainless steel.
- 2). Determine whether the stated gauge of the sheet follows the "U.S. Standard Gauge" system or the "Manufacturer's Standard Gauge" system. Note: the largest thickness of sheet steel in the MSG system is "3." If the stated gauge is 2, 1, 0, 2/0, 3/0, 4/0, 5/0, 6/0 or 7/0, then the U.S. Standard System is being used. Similarly, the largest thickness of galvanized steel under MSG is "8" while the largest MSG thickness for stainless steel is "6/0."
- 3). Visit "http://www.engineeringtoolbox.com/gauge-sheet-d_915.html" to look up the official thickness (in inches) of your material's specific gauge.
- 4). Multiply this measurement by 25.4 to convert its units to millimeters.
