Standard Wire Gauge (SWG) Conversion Chart

Category: wire

Welcome to The Crazy Wire Company’s comprehensive guide to Standard Wire Gauge (SWG) conversions.

As one of the leading suppliers of high-quality wire products, we’ve created this page to help you understand SWG and how it relates to wire thickness. Whether you’re working on a crafting project, industrial application, or electrical wiring, this page will serve as your go-to resource for accurate SWG conversions.

What is Standard Wire Gauge (SWG)?

Standard Wire Gauge (SWG) is a British standard system for measuring wire thickness, originally developed in the 19th century. It is widely used across the UK and in other regions that follow metric standards. SWG assigns numerical values to different wire diameters, with larger numbers indicating thinner wires.

This system is especially popular for crafting, resistance wire, and industrial applications. At The Crazy Wire Company, we stock a wide variety of wires that correspond to SWG measurements, ensuring you’ll find the perfect wire for your needs.

Standard Wire Gauge Conversion Chart

Here is a detailed SWG conversion chart showing the wire thickness in millimetres and inches. Use this chart to find the exact diameter for your project needs.

SWG	Diameter (mm)	Diameter (inches)
7/0	12.7	0.5
6/0	10.16	0.4
5/0	8.636	0.34
4/0	7.62	0.3
3/0	6.35	0.25
2/0	5.588	0.22
1/0	4.826	0.19
0	4.064	0.16
1	3.658	0.144
2	3.251	0.128
3	2.946	0.116
4	2.642	0.104
5	2.337	0.092
6	2.032	0.08
7	1.829	0.072
8	1.626	0.064
9	1.422	0.056
10	1.219	0.048
11	1.016	0.04
12	0.914	0.036
13	0.813	0.032
14	0.711	0.028
15	0.61	0.024
16	0.559	0.022
17	0.508	0.02
18	0.457	0.018
19	0.406	0.016
20	0.356	0.014
21	0.33	0.013
22	0.305	0.012
23	0.279	0.011
24	0.254	0.01
25	0.229	0.009
26	0.203	0.008
27	0.178	0.007
28	0.152	0.006
29	0.127	0.005
30	0.102	0.004
31	0.089	0.0035
32	0.076	0.003
33	0.064	0.0025
34	0.051	0.002
35	0.043	0.0017
36	0.038	0.0015
37	0.033	0.0013
38	0.03	0.0012
39	0.025	0.001
40	0.02	0.0008
41	0.018	0.0007
42	0.016	0.0006
43	0.013	0.0005
44	0.01	0.0004
45	0.009	0.00035
46	0.007	0.0003
47	0.006	0.00025
48	0.005	0.0002
49	0.004	0.00016
50	0.003	0.00012

We offer also a massive range of stainless steel wire and nichrome wire through our store. Choose the wire that you want to work with and we’ll get spooling.

If you’re interested in learning more about wire, check out our other blog on Everything You Need to Know About Wires.

We are also proud to supply this product on our highly popular eBay store, check us out there too.

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