Gauge to MM Calculator

To convert gauge to mm enter gauge number and select the appropriate gauge standard (AWG, SWG, or BWG) from calculator.

The Gauge to MM calculator shows conversion diameter in millimeters and inches.

14 gauge = 1.63 mm 16 gauge = 1.29 mm 12 gauge = 2.05 mm 18 gauge = 1.02 mm 20 gauge = 0.81 mm 22 gauge = 0.64 mm 24 gauge = 0.51 mm 26 gauge = 0.40 mm

Gauge Converted to	mm
1	7.348
2	6.544
3	5.827
4	5.189
5	4.621
6	4.115
7	3.665
8	3.264
9	2.906
10	2.588
11	2.305
12	2.053
13	1.828
14	1.628
15	1.450
16	1.291
17	1.150
18	1.024
19	0.912
20	0.812
21	0.723
22	0.644
23	0.573
24	0.511
25	0.455
26	0.405
27	0.361
28	0.321
29	0.286
30	0.255
31	0.227
32	0.202
33	0.180
34	0.160
35	0.143
36	0.127
37	0.113
38	0.101
39	0.090
40	0.080
41	0.071
42	0.064
43	0.057
44	0.051
45	0.045
46	0.040
47	0.036
48	0.032
49	0.028
50	0.025

Gauge to Conversion MM Formula

MM = Standard Reference Table Value
Inches = MM ÷ 25.4

Parameters:

• Gauge: Wire gauge number
• Standard: Selected gauge standard
• 25.4: Millimeters per inch

For Gauge 14: Diameter = 1.628 mm (0.0641 inches).

How to Convert Gauge to MM?

To convert gauge to MM, first identify your gauge standard, then use the corresponding conversion table. For example, Gauge 16 equals 1.291 mm.

For Gauge 12: Diameter = 2.053 mm (0.0808 inches).

To convert Gauge 18: Diameter = 1.830 mm (0.0760 inches).

For Gauge 20: Diameter = 1.220 mm (0.0480 inches).

What is Gauge and MM?

Wire Gauge: A gauge is a standardized measurement system for wire diameter. Different standards exist worldwide. Lower numbers indicate thicker wires (e.g., Gauge 4 = 5.189 mm), while higher numbers indicate thinner wires (e.g., Gauge 30 = 0.255 mm).

MM (Millimeter): A millimeter is a metric unit of length equal to one-thousandth of a meter. In wire measurement, it represents the wire’s diameter. For example, 2 mm is commonly used in electrical applications, while 0.5 mm might be used in electronics.