How thick is 16 gauge steel in mm?

Electrical & MechanicalStandard Metal Thickness

Sheet Metal & Wire Gauge to MM Converter

Convert sheet metal gauge, galvanized steel, and electrical conductor wire gauges (AWG) to exact decimal inches and millimeters.

Electrical & Mechanical Field StandardsStandard Metal Thickness

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Quick Summary & Key Answer

16-gauge standard carbon steel measures 0.0598 inches or 1.519 mm thick. Galvanized 16-gauge steel is slightly thicker at 0.0635 inches (1.613 mm) due to the protective zinc coating. 24-gauge residential ductwork steel measures 0.0239 inches or 0.607 mm.

Lower gauge numbers signify thicker metal; higher gauge numbers signify thinner metal.
Sheet metal and wire gauge standards differ across steel, aluminum, and copper.
1 inch = exactly 25.4 millimeters.

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Gauge Number

Material Standard

Calculated OutputStandard Thickness Verified

Metric Thickness in Millimeters

1.519 mmmm

Decimal Inches Thickness: 0.0598"
Fractional Approximation: ~1/16"
Weight per Square Foot: 2.44 lbs/sq ft (steel)

Note: Galvanized sheet metal is slightly thicker than standard steel due to the protective zinc dip layer.

HVAC Duct Gauge Standards

SMACNA HVAC standards mandate minimum 26-gauge steel for small residential branch ducts and 22-to-24 gauge for main air distribution trunks.

Frequently Asked Questions

Common questions regarding this calculation and code compliance

16 gauge standard carbon steel is approximately 1.52 mm thick (0.0598 inches).