Aluminum Gauge Chart

See aluminum gauge thickness and tolerance, in inches and millimeters.

Caution
  • Gauge thickness varies by material type
  • Odd number gauges (e.g. 3, 15, 27) are often only available through large mill runs
GaugeImperial (inches)Metric (mm)
ThicknessToleranceThicknessTolerance
30.2294±0.0115.827±0.279
40.2043±0.0115.189±0.279
50.1819±0.0094.620±0.229
60.1620±0.0094.115±0.229
70.1443±0.0073.665±0.178
80.1285±0.0073.264±0.178
90.1144±0.0062.906±0.152
100.1019±0.0062.588±0.152
110.0907±0.00452.304±0.114
120.0808±0.00452.052±0.114
130.0720±0.0041.829±0.102
140.0641±0.0041.628±0.102
150.0571±0.00351.450±0.089
160.0508±0.00351.290±0.089
170.0453±0.00351.151±0.089
180.0403±0.0031.024±0.076
190.0359±0.0030.912±0.076
200.0320±0.00250.813±0.064
210.0285±0.00250.724±0.064
220.0253±0.0020.643±0.051
230.0226±0.0020.574±0.051
240.0201±0.0020.511±0.051
250.0179±0.0020.455±0.051
260.0159±0.00150.404±0.038
270.0142±0.00150.361±0.038
280.0126±0.00150.320±0.038
290.0113±0.00150.287±0.038
300.0100±0.00150.254±0.038
310.0089±0.00150.226±0.038
320.0080±0.00150.203±0.038
330.0071±0.00150.180±0.038
340.0063±0.00150.160±0.038
350.0056±0.00150.142±0.038
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