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Hand Sewing Needle Sizes

Hand Sewing Needle Size Table

C. S. Osborne hand sewing needle diameters use the Standard Wire Gauge system. In this system a higher gauge number means a smaller needle diameter. For example a 20 Gauge needle's diameter is less than a 10 gauge needle's diameter. Here are the U.S. and metric diameters for needle gauges:
Gauge Inches Millimeters

5.0

0.212 5.385

5.5

0.202 5.130

6.0

0.192 4.877

7.0

0.176 4.470

7.5

0.168 4.267

8.0

0.160 4.064

9.0

0.144 3.658

10.0

0.128 3.251

11.0

0.116 2.946

11.5

0.110 2.794

12.0

0.104 2.642

13.0

0.092 2.337

14.0

0.080 2.032

15.0

0.072 1.829

16.0

0.064 1.626

17.0

0.056 1.422

18.0

0.048 1.219

19.0

0.040 1.016

20.0

0.035 0.914

21.0

0.032 0.813

22.0

0.028 0.711

23.0

0.024 0.610