# Sheet metal gauge chart: steel, galvanized, stainless and aluminum (10, 12, 14, 16, 18, 20 gauge in inches and mm) > How thick is 14 gauge, 16 gauge or 11 gauge sheet steel in inches and mm? - Category: Hardware › Materials & stock - Kind: Standard part - Basis: Sheet gauge tables from CNCCookbook, cross-checked on SSM Alloys, and the AWG diameters in ASTM B258; numbers only - Page: https://xemstudio.com/objects/sheet-metal-gauge-chart-steel-galvanized-stainless-aluminum/ · JSON: https://xemstudio.com/api/geometry?object=sheet-metal-gauge-chart-steel-galvanized-stainless-aluminum · Plain text: https://xemstudio.com/objects/sheet-metal-gauge-chart-steel-galvanized-stainless-aluminum/sheet.txt - License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license - Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/) **Exact dimensions.** True size, with no tolerance added. ## Notes - Gauge numbers are not a physical unit: each material has its own table, so 10 gauge is 0.1345 in in steel, 0.1382 in in galvanized, 0.1406 in in stainless and 0.1019 in in aluminium. Steel, galvanized and stainless columns are from CNCCookbook's tables; every even gauge from 8 to 30 (and 7) also appears on SSM Alloys' chart and the two agree to the fourth decimal (the code checks this). The mm values are inches × 25.4. Both sites present the tables without citing the standard; the sources do not name the standard behind the steel column (it is the one usually called the Manufacturers' Standard Gauge). - Aluminium and brass: SSM Alloys lists the Brown & Sharpe values for gauges 7 to 12 and even gauges to 30, and every one of them equals the AWG diameter in ASTM B258 (Xem checked all 15). So the other gauges for aluminium are the AWG numbers on the AWG page; they are left '-' here because no sheet-gauge source listed them. Aluminium sheet is normally ordered by decimal thickness, not gauge. - Gauge tables shown: steel 3 to 38, galvanized 8 to 32, stainless 3 to 38. Zero and multi-zero stainless gauges (0 to 0000000, 0.3125 to 0.5000 in) are on the CNCCookbook page and are not repeated. Sheet thickness tolerances are separate tables in the same sources (not reproduced). - Tube wall gauges (the Alu / Copper / Brass / Steel tube column in SSM's chart: 10 gauge 0.134 in, 11 0.120, 12 0.109, 14 0.083, 16 0.065, 18 0.049, 20 0.035, 22 0.028, 24 0.022) are a different series again; see the steel tube gauge page for square and rectangular tube. Wire gauges (AWG, SWG) are on their own pages. No files: a sheet is a plain plate. ## Sizes | gauge | standard steel, in / mm | galvanized steel, in / mm | stainless steel, in / mm | aluminum and brass (B&S), in / mm | |---|---|---|---|---| | 3 | 0.2391 / 6.073 | - | 0.2500 / 6.350 | - | | 4 | 0.2242 / 5.695 | - | 0.2344 / 5.954 | - | | 5 | 0.2092 / 5.314 | - | 0.2187 / 5.555 | - | | 6 | 0.1943 / 4.935 | - | 0.2031 / 5.159 | - | | 7 | 0.1793 / 4.554 | - | 0.1875 / 4.762 | 0.14430 / 3.665 | | 8 | 0.1644 / 4.176 | 0.1681 / 4.270 | 0.1719 / 4.366 | 0.12850 / 3.264 | | 9 | 0.1495 / 3.797 | 0.1532 / 3.891 | 0.1562 / 3.967 | 0.11440 / 2.906 | | 10 | 0.1345 / 3.416 | 0.1382 / 3.510 | 0.1406 / 3.571 | 0.10190 / 2.588 | | 11 | 0.1196 / 3.038 | 0.1233 / 3.132 | 0.1250 / 3.175 | 0.09074 / 2.305 | | 12 | 0.1046 / 2.657 | 0.1084 / 2.753 | 0.1094 / 2.779 | 0.08081 / 2.053 | | 13 | 0.0897 / 2.278 | 0.0934 / 2.372 | 0.0937 / 2.380 | - | | 14 | 0.0747 / 1.897 | 0.0785 / 1.994 | 0.0781 / 1.984 | 0.06408 / 1.628 | | 15 | 0.0673 / 1.709 | 0.0710 / 1.803 | 0.0703 / 1.786 | - | | 16 | 0.0598 / 1.519 | 0.0635 / 1.613 | 0.0625 / 1.587 | 0.05082 / 1.291 | | 17 | 0.0538 / 1.367 | 0.0575 / 1.460 | 0.0562 / 1.427 | - | | 18 | 0.0478 / 1.214 | 0.0516 / 1.311 | 0.0500 / 1.270 | 0.04030 / 1.024 | | 19 | 0.0418 / 1.062 | 0.0456 / 1.158 | 0.0437 / 1.110 | - | | 20 | 0.0359 / 0.912 | 0.0396 / 1.006 | 0.0375 / 0.952 | 0.03196 / 0.812 | | 21 | 0.0329 / 0.836 | 0.0366 / 0.930 | 0.0344 / 0.874 | - | | 22 | 0.0299 / 0.759 | 0.0336 / 0.853 | 0.0312 / 0.792 | 0.02535 / 0.644 | | 23 | 0.0269 / 0.683 | 0.0306 / 0.777 | 0.0281 / 0.714 | - | | 24 | 0.0239 / 0.607 | 0.0276 / 0.701 | 0.0250 / 0.635 | 0.02010 / 0.511 | | 25 | 0.0209 / 0.531 | 0.0247 / 0.627 | 0.0219 / 0.556 | - | | 26 | 0.0179 / 0.455 | 0.0217 / 0.551 | 0.0187 / 0.475 | 0.01594 / 0.405 | | 27 | 0.0164 / 0.417 | 0.0202 / 0.513 | 0.0172 / 0.437 | - | | 28 | 0.0149 / 0.378 | 0.0187 / 0.475 | 0.0156 / 0.396 | 0.01264 / 0.321 | | 29 | 0.0135 / 0.343 | 0.0172 / 0.437 | 0.0141 / 0.358 | - | | 30 | 0.0120 / 0.305 | 0.0157 / 0.399 | 0.0125 / 0.318 | 0.01003 / 0.255 | | 31 | 0.0105 / 0.267 | 0.0142 / 0.361 | 0.0109 / 0.277 | - | | 32 | 0.0097 / 0.246 | 0.0134 / 0.340 | 0.0102 / 0.259 | - | | 33 | 0.0090 / 0.229 | - | 0.0094 / 0.239 | - | | 34 | 0.0082 / 0.208 | - | 0.0086 / 0.218 | - | | 35 | 0.0075 / 0.190 | - | 0.0078 / 0.198 | - | | 36 | 0.0067 / 0.170 | - | 0.0070 / 0.178 | - | | 37 | 0.0064 / 0.163 | - | 0.0066 / 0.168 | - | | 38 | 0.0060 / 0.152 | - | 0.0062 / 0.157 | - | ## Where the files are - CNCCookbook: [Sheet metal gauge chart: standard steel, galvanized steel and stainless steel gauge tables (inch and mm)](https://www.cnccookbook.com/sheet-metal-gauge-chart-updated-for-2021) — web — Publisher's page; dimensions are facts - SSM Alloys: [Steel gauge chart: cold / hot rolled steel, galvanized, stainless, brass and aluminum sheet columns for even gauges 8-30](https://ssmalloys.com/steel-gauge-chart/) — web — Publisher's page; dimensions are facts - ASTM (iTeh sample copy): [ASTM B258-02: Table 1, standard nominal diameters and cross-sectional areas of AWG sizes of solid round wires at 20 C, 4/0 to 56](https://cdn.standards.iteh.ai/samples/959/0248539ea2744b1b909bfde58d575ab1/ASTM-B258-02.pdf) — web — Publisher's page; dimensions are facts ## Questions **How thick is 14 gauge steel?** 0.0747 in (1.897 mm) in standard steel; 0.0785 in in galvanized and 0.0781 in in stainless. **How thick is 16 gauge steel?** 0.0598 in (1.519 mm) standard steel, 0.0635 in galvanized, 0.0625 in stainless. **How thick is 11 gauge steel?** 0.1196 in (3.038 mm) standard steel; 11 gauge stainless is 1/8 in (0.1250 in). **Is 10 gauge the same in aluminum and steel?** No: 0.1019 in in aluminium (Brown & Sharpe) and 0.1345 in in standard steel. ## Fits with - [Square and rectangular steel tube sizes by gauge (1x1, 1-1/2, 2x1 in; 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