Needle gauge comparison chart

Hypodermic & piercing needles are available in a wide variety of sizes described by gauge numbers. Smaller gauge numbers indicate larger diameter needles.

Needle	Nominal O.D.			Nominal I.D.
Gauge	mm	inches	tol. (in.)	mm	inches	tol. (in.)
10	3.404	0.1340	±0.0010	2.692	0.1060	±0.0020
11	3.048	0.1200	"	2.388	0.0940	"
12	2.769	0.1090	"	2.159	0.0850	"
13	2.413	0.0950	"	1.803	0.0710	"
14	2.108	0.0830	"	1.600	0.0630	"
15	1.829	0.0720	±0.0005	1.372	0.0540	±0.0015
16	1.651	0.0650	"	1.194	0.0470	"
17	1.473	0.0580	"	1.067	0.0420	"
18	1.270	0.0500	"	0.838	0.0330	"
19	1.067	0.0420	"	0.686	0.0270	"
20	0.902	0.0355	+0.0005 -0.0000	0.584	0.0230	+0.0015 -0.0000
21	0.813	0.0320	"	0.495	0.0195	"
22	0.711	0.0280	"	0.394	0.0155	"
22s	0.711	0.0280	"	0.140	0.0055	"
23	0.635	0.0250	"	0.318	0.0125	"
24	0.559	0.0220	"	0.292	0.0115	"
25	0.508	0.0200	"	0.241	0.0095	"
25s	0.508	0.0200	"	0.140	0.0055	"
26	0.457	0.0180	"	0.241	0.0095	"
26s	0.467	0.0184	"	0.114	0.0045	"
27	0.406	0.0160	"	0.191	0.0075	"
28	0.356	0.0140	"	0.165	0.0065	"
29	0.330	0.0130	"	0.165	0.0065	"
30	0.305	0.0120	"	0.140	0.0055	"
31	0.254	0.0100	"	0.114	0.0045	"
32	0.229	0.0090	"	0.089	0.0035	"
33	0.203	0.0080	"	0.089	0.0035	"

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This article is about Body Piercings and their care See Piercing for an index of other articles

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