Xem Studiomeasured geometryLibrary › Electronics › Wiring & connectors ·
SWG standard wire gauge table (British, BS 3737): 7/0 to 50, diameter in inches and mm
What is the diameter of 14 SWG, 18 SWG or 22 SWG wire? · Standard part · basis: Wikipedia's Standard wire gauge table (BS 3737:1964, withdrawn), cross-checked on Engineering ToolBox; numbers only
Also called: swg to mm, swg to inches, 14 swg diameter, 18 swg wire diameter, swg wire gauge chart, 22 swg mm, swg vs awg, 16 swg wire, swg to awg, 20 swg diameter, 10 swg in mm, standard wire gauge table, imperial standard wire gauge
Exact dimensions. True size, with no tolerance added.
- sizes
- 57 in table
Notes
- Standard (Imperial) wire gauge, also called the British Standard Gauge, from the table on Wikipedia, which cites BS 3737:1964 (withdrawn; the current British standard for metallic materials is BS 6722:1986). Cross-checked against the Engineering ToolBox SWG table: all inch values are the same and all mm values agree to rounding, with one disagreement: for gauge 0 (written 1/0 on the Engineering ToolBox) Wikipedia prints 8.230 mm, Engineering ToolBox 8.236 mm. 0.324 in × 25.4 is 8.2296 mm, so the Wikipedia number is shown and the other is not used.
- SWG is not AWG: 10 SWG is 0.128 in, 10 AWG is 0.1019 in (see the AWG page). SWG is used for wire in the UK, for some sheet and for wire gauges quoted on jewellery and musical wire in British catalogues; sheet metal gauge numbers are a third, different series (see the sheet gauge page).
- Diameters only: no area, mass or resistance is on the sources read for SWG, so none is shown. No files: a wire is a plain cylinder.
SWG standard wire gauge table (British, BS 3737): 7/0 to 50… size chart
| SWG | diameter (in) | diameter (mm) |
|---|---|---|
| 7/0 | 0.500 | 12.700 |
| 6/0 | 0.464 | 11.786 |
| 5/0 | 0.432 | 10.973 |
| 4/0 | 0.400 | 10.160 |
| 3/0 | 0.372 | 9.449 |
| 2/0 | 0.348 | 8.839 |
| 0 (also written 1/0) | 0.324 | 8.230 |
| 1 | 0.300 | 7.620 |
| 2 | 0.276 | 7.010 |
| 3 | 0.252 | 6.401 |
| 4 | 0.232 | 5.893 |
| 5 | 0.212 | 5.385 |
| 6 | 0.192 | 4.877 |
| 7 | 0.176 | 4.470 |
| 8 | 0.160 | 4.064 |
| 9 | 0.144 | 3.658 |
| 10 | 0.128 | 3.251 |
| 11 | 0.116 | 2.946 |
| 12 | 0.104 | 2.642 |
| 13 | 0.092 | 2.337 |
| 14 | 0.080 | 2.032 |
| 15 | 0.072 | 1.829 |
| 16 | 0.064 | 1.626 |
| 17 | 0.056 | 1.422 |
| 18 | 0.048 | 1.219 |
| 19 | 0.040 | 1.016 |
| 20 | 0.036 | 0.914 |
| 21 | 0.032 | 0.813 |
| 22 | 0.028 | 0.711 |
| 23 | 0.024 | 0.610 |
| 24 | 0.022 | 0.559 |
| 25 | 0.020 | 0.5080 |
| 26 | 0.018 | 0.4572 |
| 27 | 0.0164 | 0.4166 |
| 28 | 0.0148 | 0.3759 |
| 29 | 0.0136 | 0.3454 |
| 30 | 0.0124 | 0.3150 |
| 31 | 0.0116 | 0.2946 |
| 32 | 0.0108 | 0.2743 |
| 33 | 0.0100 | 0.2540 |
| 34 | 0.0092 | 0.2337 |
| 35 | 0.0084 | 0.2134 |
| 36 | 0.0076 | 0.1930 |
| 37 | 0.0068 | 0.1727 |
| 38 | 0.0060 | 0.1524 |
| 39 | 0.0052 | 0.1321 |
| 40 | 0.0048 | 0.1219 |
| 41 | 0.0044 | 0.1118 |
| 42 | 0.0040 | 0.1016 |
| 43 | 0.0036 | 0.0914 |
| 44 | 0.0032 | 0.0813 |
| 45 | 0.0028 | 0.0711 |
| 46 | 0.0024 | 0.0610 |
| 47 | 0.0020 | 0.0508 |
| 48 | 0.0016 | 0.0406 |
| 49 | 0.0012 | 0.0305 |
| 50 | 0.0010 | 0.0254 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Wikipedia | Standard wire gauge: SWG 7/0 to 50 in inches and mm (BS 3737:1964, withdrawn) | web | Publisher's page; dimensions are facts |
| Engineering ToolBox | SWG - Standard Wire Gauge: the same table, used as a cross-check | web | Publisher's page; dimensions are facts |
Xem scan
File coming
No downloadable true-size file yet: the published figures do not fix the whole shape, and Xem never guesses a number. A measured scan is planned; request it and it moves up.
https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.Plain text: sheet.txt · JSON: /api/geometry?object=swg-standard-wire-gauge-table
Fits with
Questions
What is the diameter of 14 SWG?
0.080 in (2.032 mm).
What is 18 SWG in mm?
1.219 mm (0.048 in).
Is SWG the same as AWG?
No: 10 SWG is 0.128 in (3.251 mm), 10 AWG is 0.1019 in (2.59 mm).