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    Sheet Metal Gauge Chart

    Sheet Metal Roll

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    Sheet metal gauge (or gage) numbers refer to the thickness of sheet metal. This thickness is measured in either mm or in thousandths of an inch (in). The higher the gauge, the thinner the sheet metal (except for Zinc).

    The gauge size for each type of material differs and is determined by weight.

    Common Sheet Metal Gauge Standards

    Manufacturers’ Standard Gage – for standard steel, galvanized steel, and stainless steel

    The American Wire Gage (AWG) or Brown and Sharpe Gage – for non-ferrous metals, such as aluminum and brass.

    Birmingham Gage (BG) – for a variety of metals

    Standard Gauge for Zinc

    The following charts shows the various gauge sizes of the common engineering materials, and their measurements in metric and imperial.

    You might also want to see our Sheet Metal Gauge Calculator (mm to Gauge).

    Sheet Metal Gauge Chart (Metric - mm)

    Gauge #Standard SteelGalvanized SteelStainless SteelAluminumBirmingham GageZinc
    0000000--12.700-16.932-
    000000--11.90214.73215.875-
    00000--11.11313.11914.943-
    0000--10.32011.68413.757-
    000--9.52510.40412.700-
    00--8.7339.26611.308-
    0--7.9388.25210.069-
    1--7.1457.3488.9710.051
    2--6.7466.5437.9930.102
    36.073-6.3505.8277.1220.152
    45.695-5.9545.1896.350.203
    55.314-5.5554.6205.6520.254
    64.935-5.1594.1155.0320.305
    74.554-4.7633.6654.4810.356
    84.1764.2704.3663.2643.9880.406
    93.7973.8913.9672.9063.5510.457
    103.4163.5103.5712.5883.1750.508
    113.0383.1323.1752.3042.8270.610
    122.6572.7532.7792.0522.5170.711
    132.2782.3722.3801.8292.240.813
    141.8971.9941.9841.6281.9940.914
    151.7091.8031.7861.4501.7751.016
    161.5191.6131.5881.2901.5881.143
    171.3671.4611.4271.1511.4121.270
    181.2141.3111.2701.0241.2571.397
    191.0621.1581.1100.9121.1181.524
    200.9121.0060.9530.8130.9961.778
    210.8360.9300.8740.7240.8862.032
    220.7590.8530.7920.6430.7922.286
    230.6830.7770.7140.5740.7062.540
    240.6070.7010.6350.5110.6273.175
    250.5310.6270.5560.4550.5596.350
    260.4550.5510.4750.4040.4989.525
    270.4170.5130.4370.3610.44212.700
    280.3780.4750.3960.3200.39625.400
    290.3430.4370.3580.2870.353-
    300.3050.3990.3180.2540.312-
    310.2670.3610.2770.2260.279-
    320.2460.3400.2590.2030.249-
    330.229-0.2390.1800.221-
    340.208-0.2180.1600.196-
    350.191-0.1980.1420.175-
    360.170-0.1780.1270.155-
    370.163-0.1680.1140.137-
    380.152-0.1570.1020.122-
    39---0.0890.109-
    40---0.0790.097-
    41----0.086-
    42----0.076-
    43----0.069-
    44----0.061-
    45----0.053-
    46----0.048-
    47----0.043-
    48----0.041-
    49----0.033-
    50----0.030-
    51----0.027-
    52----0.024-

    You might also want to see our Sheet Metal Gauge Calculator (inch to Gauge).

    Sheet Metal Gauge Chart (Imperial - inch)​

    Gauge #Standard SteelGalvanized SteelStainless SteelAluminumBirmingham GageZinc
    0000000--0.5000-0.6666-
    000000--0.46860.58000.6250-
    00000--0.43750.51650.5883-
    0000--0.40630.46000.5416-
    000--0.37500.40960.5000-
    00--0.34380.36480.4452-
    0--0.31250.32490.3964-
    1--0.28130.28930.35320.0020
    2--0.26560.25760.31470.0040
    30.2391-0.25000.22940.28040.0060
    40.2242-0.23440.20430.25000.0080
    50.2092-0.21870.18190.22250.0100
    60.1943-0.20310.16200.19810.0120
    70.1793-0.18750.14430.17640.0140
    80.16440.16810.17190.12850.15700.0160
    90.14950.15320.15620.11440.13980.0180
    100.13450.13820.14060.10190.12500.0200
    110.11960.12330.12500.09070.11130.0240
    120.10460.10840.10940.08080.09910.0280
    130.08970.09340.09370.07200.08820.0320
    140.07470.07850.07810.06410.07850.0360
    150.06730.07100.07030.05710.06990.0400
    160.05980.06350.06250.05080.06250.0450
    170.05380.05750.05620.04530.05560.0500
    180.04780.05160.05000.04030.04950.0550
    190.04180.04560.04370.03590.04400.0600
    200.03590.03960.03750.03200.03920.0700
    210.03290.03660.03440.02850.03490.0800
    220.02990.03360.03120.02530.03120.0900
    230.02690.03060.02810.02260.02780.1000
    240.02390.02760.02500.02010.02470.1250
    250.02090.02470.02190.01790.02200.2500
    260.01790.02170.01870.01590.01960.3750
    270.01640.02020.01720.01420.01740.5000
    280.01490.01870.01560.01260.01561.0000
    290.01350.01720.01410.01130.0139-
    300.01200.01570.01250.01000.0123-
    310.01050.01420.01090.00890.0110-
    320.00970.01340.01020.00800.0098-
    330.0090-0.00940.00710.0087-
    340.0082-0.00860.00630.0077-
    350.0075-0.00780.00560.0069-
    360.0067-0.00700.00500.0061-
    370.0064-0.00660.00450.0054-
    380.0060-0.00620.00400.0048-
    39---0.00350.0043-
    40---0.00310.0038-
    41----0.0034-
    42----0.0030-
    43----0.0027-
    44----0.0024-
    45----0.0021-
    46----0.0019-
    47----0.0017-
    48----0.0016-
    49----0.0013-
    50----0.0012-
    51----0.0011-
    52----0.0010-

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