SHEET METAL GAUGE CHART
Same gauge. Different thickness.
Choose the material first. Compare nominal inch and millimeter values, or work back from a measured thickness.
| Gauge | Inches | Millimeters |
|---|---|---|
| 0.1793 | 4.5542 | |
| 0.1644 | 4.1758 | |
| 0.1495 | 3.7973 | |
| 0.1345 | 3.4163 | |
| 0.1196 | 3.0378 | |
| 0.1046 | 2.6568 | |
| 0.0747 | 1.8974 | |
| 0.0598 | 1.5189 | |
| 0.0478 | 1.2141 | |
| 0.0359 | 0.9119 | |
| 0.0299 | 0.7595 | |
| 0.0239 | 0.6071 | |
| 0.0179 | 0.4547 | |
| 0.0149 | 0.3785 |
READ THE TABLE IN CONTEXT
Nominal does not mean measured.
These are the listed sheet-gauge entries in the selected US supplier reference. A missing gauge number is not interpolated or filled from another material. The table is not a certificate of your sheet’s actual thickness.
Inches retain the selected source’s decimal values. Millimeters are calculated from those inches using 1 in = 25.4 mm, so they can differ from a supplier’s shortened metric display. For galvanized sheet, confirm the supplier’s coating and thickness specification.
Reference: Metal Supermarkets. Overlapping steel, aluminum and stainless entries were compared with UniPunch; differences in displayed decimal precision are recorded in our methodology.