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Wire Measurement Conversion Tables

Quick Jump: Precious Metal | Copper & Brass | Convert Wire Gauge to Inches and MM

If you're looking for help with how cabochon, bead, and jump ring measurements work, click here!

Footage on Precious Metal Wire
Feet Per Ounce (Approximate)

Precious Metal wire (gold filled, sterling silver, and Argentium silver) is measured by length in feet, but can also be measured in weight, using the troy ounce (ozt). Here is a table to help you see how many feet are in a troy ounce of that metal by gauge and shape.

Gauge (Size) Gold Filled Round Gold Filled Square Gold Filled 1/2 Round Sterling Round Sterling Square Sterling 1/2 Round
14 5.45 4.29 11.08 4.72 3.71 9.83
16 8.65 6.81 16.83 7.52 5.91 13.50
18 13.97 11.00 27.33 11.90 9.35 24.66
20 21.82 17.18 38.50 18.98 14.91 41.00
21 27.59 21.72 51.00 23.92 18.79 54.00
22 34.75 27.72 70.75 30.21 23.73 60.75
24 55.87 44.00 ------- 47.85 37.58 91.00
26 87.33 68.79 ------- 76.34 59.96 -------
28 140.77 110.84 ------- 121.21 95.20 -------
30 223.71 176.15 ------- 193.05 151.62 -------
32 349.65 275.31 ------- 306.75 240.92 -------

Gauge (Size) Argentium® Round Argentium® Square Argentium® 1/2 Round
14 4.7 3.575 9.4
16 7.5 5.5 15
18 12 9.3 24
20 19 15 34
21 24 20 50
22 30.5 25.6 59
24 48 38.5 -------
26 77 ------- -------
28 125 ------- -------

Gauge (Size) Sterling SIlver Filled DS Round Sterling SIlver Filled DS Square Sterling SIlver Filled DS 1/2 Round Sterling SIlver Filled HH Round Sterling SIlver Filled HH Square Sterling SIlver Filled HH 1/2 Round
12 ------- ------- 7 ------- ------- -------
14 5.38 ------- 10.5 5.26 ------- 10.5
16 8.5 ------- 16.5 8.5 ------- 16.5
18 14.25 12 25 14 11.5 27
20 23.25 18 ------- 21.75 18 33.5
21 ------- 25 ------- ------- 25 -------
22 37 30 ------- 33.5 30 -------
24 59 ------- ------- ------- ------- -------

 

Footage Copper and Brass Jewelry Wire
Feet Per Pound (Approximate)

Copper and Brass jewelry wire can be measured in length or weight (using the standard pound). Copper and brass weigh about the same. Here's a table to tell you how many feet are in a pound of that gauge of brass or copper wire.

Gauge
Copper/Brass Round Wire
Copper/Brass Square Wire
10 31.82 25.05
12 50.59 39.63
14 80.44 63.33
16 127.90 100.71
18 203.40 160.16
20 323.40 254.65
21 407.80 321.10
22 514.20 404.88
24 817.70 643.86
26 1300.00 1023.62
28 2067.00 1627.56
30 3287.00 2588.19
32 5277.00 4118.75
34 8310.00 6543.31

Conversion Table - American Wire Gauge (AWG) to Inches and mm

Most wire is sold by the gauge, according to AWG standards. However, bead holes and other useful measurements are usually given in inches or millimeters. Here's a handy table to help you convert the gauge of a wire to its diameter (width across) in inches and millimeters.

Gauge Size 10 12 14 16 18 20 21 22 24 26 28 30
Diameter in inches 0.1019 0.0808 0.0641 0.0508 0.0403 0.0320 0.0285 0.0253 0.0201 0.0159 0.0125 0.0100
Diameter in mm 2.588 2.05 1.63 1.29 1.02 0.813 0.723 0.643 0.511 0.404 0.320 0.254