Sheet Metal Gauge Chart

Gauge, inch and mm are commonly used thickness units for sheet metal, gauge and inch are generally used by people in the United Kingdom and the United States, while mm is commonly used in China and other countries

What are the Gauges?

The gauge is used to specify the thickness of the sheet metal. The gauge is neither standard nor metric, and its value has nothing to do with those measuring systems.

The sheet metal thickness gauge for steel is based on a weight of 41.82 pounds per square foot per inch of thickness. This is called the steel plate manufacturer’s standard gauge.

Metal Gauge Thickness Conversion Chart

Below is a chart of sheet metal gauge to mm/inch, including standard steel, aluminum, and galvanized steel.

ALUMINUMGAUGESTEELGALVANIZED
mmInchesInchesmmInchesmm
5.8270.229430.23916.073
5.1890.204340.22425.695
4.620.181950.20925.314
4.1150.16260.17934.935
3.6650.144370.17934.554
3.2640.128580.16444.176
2.9060.114490.14953.7970.15323.891
2.5880.1019100.13453.4160.13823.51
2.3040.0907110.11963.030.12833.132
2.0520.0808120.10462.6570.10842.753
1.8290.072130.08972.2780.09342.372
1.6280.0641140.07471.8970.07851.993
1.450.0571150.06731.7090.0711.803
1.290.0508160.05981.3670.06351.161
1.1510.0453170.05381.3670.05751.46
1.0240.0403180.04781.2140.05161.31
0.9120.0359190.04181.0620.04561.158
0.8130.032200.03590.9120.03961.006
0.7240.0258210.03290.8260.03660.093
0.6430.0253220.02990.7590.03360.853
0.5740.0226230.02690.7590.03060.777
0.5110.0201240.02390.6070.02780.627
0.4550.0179250.02090.5310.02470.627
0.4040.0159260.01790.4550.02170.551
0.3610.0142270.01640.4170.020.513
0.320.0126280.01490.3780.01870.475
0.2870.0113290.01350.3430.01720.437
0.2540.01300.0120.3050.01570.399
0.2260.0089310.01050.2670.01420.361
0.2030.008320.00970.2460.01340.34
0.180.0071330.0090.246
0.160.0063340.00820.208
0.1420.0056350.00750.191

Stainless Steel Gauge Chart

Gauge Stainless Steel (mm)Stainless Steel(Inch)
45.9540.2344
55.5550.2187
65.1590.2031
74.7630.1875
84.1910.165
93.9670.1562
103.5710.1406
113.1750.125
122.7790.1094
132.380.0937
141.9840.0781
151.7860.0703
161.5880.0625
171.4270.0562
181.270.05
191.110.0437
200.9530.0375
210.8740.0344
220.7920.0312
230.7140.0281
240.6350.025
250.5560.0219
260.4750.0187
270.4370.0172
280.3960.0156
290.3580.0141
300.3180.0125
310.2770.0109
320.2590.0102
330.2390.0094
340.2180.0086
350.1980.0078
360.1780.007
370.1680.0066
380.1570.0062

Sheet metal Gauge Chart PDF

sheet metal gauge chart pdf

stainless steel gauge chart pdf

FAQ

What are the gauges of sheet metal?

The larger the specification number, the thinner the metal. The commonly used steel sheet metal sheet ranges from size 35 to about 3.

16 gauge thickness in mm

standard steel: 1.367

GALVANIZED steel: 1.161

ALUMINUM:1.29

Stainless Steel: 1.588

18 gauge thickness in mm

standard steel: 1.214

GALVANIZED steel: 1.31

ALUMINUM:1.024

Stainless Steel: 1.27

What gauge metal is thicker 14 or 16?

14 gauge is thicker, Let’s take galvanized steel as an example: 14gauge = 1.993mm , 16guge = 1.161.

Which 22 or 24 gauge?

22 gauge is thicker.  22 gauge STEEL is 0.0299 in, 24 gauge STEEL is 0.0239 in.

Which is thicker 20 or 30 gauge?

20 gauge is thicker.  20 gauge STEEL is 0.912mm, 30 gauge STEEL is 0.305.

Is 29 gauge metal roof good?

The metal roof of 29 gauge is relatively thin. If you live in an area with strong winds and bad weather, we recommend using a thicker 22 gauge metal roof.

What is thicker 7 gauge or 10 gauge?

7 gauge is thicker. 7 gauge STEEL is 4.554mm,  10 gauge STEEL is 3.416mm.

Which is thicker 22 gauge or 26 gauge?

22 gauge is thicker. 22 gauge STEEL is 0.0299 in,  26 gauge STEEL is 0.0179 in.

What is thicker 16 gauge or 20 gauge?

16 gauge is thicker. 16 gauge STEEL is 0.0598 in,  20 gauge STEEL is 0.0359 in.

What gauge are metal roofs?

The metal thickness of the roof ranges from 22 gauge (thickest) to 32 gauge (thinest).

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