Sheet Metal Gauge Converter to Thickness
Interactive digital caliper to convert sheet metal gauge to exact thickness (inches & mm) based on material.
Data Privacy & Security
100% Local Processing. Your engineering parameters are never transmitted to a server. All conversions execute instantly and securely within your browser.
Interactive Specs
Reference Chart
| Gauge | Thickness (in) | Thickness (mm) | lbs/ft² | kg/m² | Action |
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How to Use the Gauge Converter
- Select the sheet metal material (e.g., Standard Steel, Aluminum).
- Use the slider to select the gauge number (from 3 to 38).
- View the instantly calculated thickness in both millimeters and inches.
- Use the interactive digital caliper to visualize the exact thickness.
Frequently Asked Questions
Are all 10-gauge sheet metals the same thickness?
No. The thickness of a gauge depends on the material. A 10-gauge sheet of standard steel is 0.1345 inches thick, whereas 10-gauge aluminum is 0.1019 inches thick.
What is the difference between standard steel and galvanized steel gauges?
Galvanized steel has a zinc coating to prevent rust. Because of this coating, galvanized steel of the same gauge is slightly thicker than standard uncoated steel.
How does gauge numbering work?
The gauge number is inversely proportional to thickness. A lower gauge number (like 7) means thicker metal, while a higher gauge number (like 28) means thinner metal.
What is the Manufacturer's Standard Gage?
The Manufacturer's Standard Gage provides a standard thickness for standard steel, galvanized steel, and stainless steel in the United States.
What gauge system is used for Aluminum?
Aluminum uses the Brown & Sharpe (B&S) Gauge system, also known as American Wire Gauge (AWG), which is why its thicknesses differ from steel.
Is a 16 gauge steel sheet suitable for welding?
Yes, 16 gauge (0.0598 inches) is a very common thickness for light fabrication and auto body repair welding.
How do I calculate weight from sheet metal gauge?
To calculate weight, multiply the volume (Area × Thickness) by the material's density (e.g., steel is 0.2833 lbs/in³). Our engine calculates this automatically per square foot.
Why is stainless steel gauge different from standard steel?
Stainless steel uses the US Standard Gauge table, while standard carbon steel uses the Manufacturer's Standard Gage table, leading to slight variations in thickness for the same gauge number.
What is the thickest sheet metal gauge?
The thickest standard sheet metal gauge is typically 3 gauge (approx. 0.2391 inches for steel). Anything thicker is generally classified as plate metal rather than sheet metal.
Limitations
The thicknesses provided by this tool are nominal. Actual sheet metal thickness can vary based on manufacturing tolerances (usually ± 5% to 10%). Standard steel refers to Manufacturer's Standard Gage for uncoated steel sheet.
Data Privacy & Security
The Sheet Metal Gauge Engine runs entirely in your web browser. No measurements, project parameters, or user data are sent to any external servers. This ensures 100% data privacy for your engineering and metal fabrication projects.