Assuming this is a firearms question- the 14 gauge shotgun is very rare today. The bore diameter is smaller than a 12 g, larger than a 16g, and runs ABOUT 0.695 inches. That converts to about 17.65mm. If you are seeking to convert wire gauge, or sheet metal gauge to mm, please repost with that information.
To convert 14 x 36 gauge to millimeters, first convert the gauge size to inches, where 14 gauge is approximately 1.6 mm and 36 gauge is about 0.127 mm. Therefore, 14 x 36 gauge corresponds to a thickness of 1.6 mm for the 14 gauge and 0.127 mm for the 36 gauge. If you need a specific application or comparison, please clarify!
2.5mm=.098 of an inch or 63/640 ( that is a fraction) Direct Conversion Formula 2.5 mm* 1 in 25.4 mm = 0.09842519685 in
1.6mm
14 gauge
12 gauge is thicker than 14 gauge.
A 10 gauge earring is thicker than a 14 gauge earring. In the gauge system, a lower number indicates a thicker wire, so 10 gauge (approximately 2.59 mm in diameter) is thicker than 14 gauge (approximately 1.63 mm in diameter). Therefore, if you're choosing between the two for piercings, the 10 gauge will create a larger hole than the 14 gauge.
2.10mm thk
14 gauge is 0.0641 inches or 1.63mm in diameter.
10 gauge: 3.57 mm11 gauge: 3.18 mm
The thickness of 14 gauge (14g) steel is approximately 1.6 millimeters.
The closest would be 18 gauge which is 1.27 mm
0.7 mm = 21 gauge- Google it