Reference Charts

Jewellery ( Jewelry ) Making Reference Charts

Handy reference charts can be a jewellery designer’s best friend. After all, the less you need to think about international standards and measurement conversions, the more you can focus on what really matters: designing and producing the perfect beaded accessory! Of course, you also want your sterling silver necklace, gold bracelet, bead anklet or gemstone ring to fit, too. From wire gauges and standard necklace lengths to metric/imperial unit conversion, we have you covered. Leave the math to us and let your creativity soar!

Inches to Millimetres Chart
Millimetres to Inches Chart
Necklace Lengths Chart
Wire Gauges Chart
International Ring Size Conversion Chart
Length and Weight Measurement Conversion Chart
Wire Wrap Strength Standards Chart
Wire Guages vs Stone and Drill Hole Sizes

3/322.381/83.185/323.973/164.767/325.561/46.359/327.145/167.9411/328.733/89.5313/3210.327/1611.1115/3211.911/212.717/3213.499/1614.2919/3215.085/815.8821/3216.6711/1617.4623/3218.263/419.0525/3219.8413/1620.6427/3221.437/822.2329/3223.0215/1623.8131/3224.61

Inches to Millimetres ( Millimeters ) Chart
Inches Millimetres
1/32 0.79
1/16 1.59

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21/1631/845/3253/1661/479/3285/16911/32103/8117/161215/32131/2149/161519/321610/161711/161823/32193/42013/16

Millimetres ( Millimeters ) to Inches Chart
Size in Millimetres Nearest Equivalent in Inches
1 1/32

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Princess18 InchesMatinee24 InchesOpera32 InchesRope48 Inches

Necklace Lengths Chart
Choker 16 Inches

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230.0230.58240.020.51250.01790.455260.01590.404270.01420.361280.01260.32290.01130.287300.010.25310.00890.226320.0080.2330.00710.18340.00630.16350.00560.142360.0050.13370.00450.114380.0040.1

Wire Gauges Chart
Gauge Inches
(Decimal)
Millimetres Inches
(Fraction)
1 0.289 7.348
2 0.258 6.543
0.250 6.350 1/4
0.234 5.953 15/64
3 0.229 5.827
0.219 5.556 7/32
4 0.204 5.189
0.203 5.154 11/64
0.188 4.762 3/16
5 0.182 4.621
0.172 4.366 11/64
6 0.162 4.115
0.156 3.969 5/32
7 0.144 3.664
0.141 3.572 9/64
8 0.128 3.263
0.125 3.175 1/8
9 0.114 2.906
0.109 2.778 7/64
10 0.102 2.59
0.094 2.381 3/32
11 0.091 2.31
12 0.081 2.06
0.078 1.984 5/64
13 0.072 1.83
14 0.064 1.63
0.063 1.588
15 0.057 1.449
16 0.051 1.291
0.047 1.191 3/64
17 0.045 1.14
18 0.04 1.02
19 0.036 0.91
20 0.032 0.81
0.031 0.795 1/32
21 0.028 0.71
22 0.025 0.64
0.016 0.396 1/64

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1 1/4B 1/21 1/2C1 3/4C 1/22D21.52 1/4D 1/22 1/2E32.752 3/4E 1/23F44.003 1/4F 1/255.253 1/2G3 3/4G 1/24H74 1/4H 1/2 7.754 1/2I8 4 3/4J 95J 1/29 5 1/4K 105 1/2K 1/210 5 3/4L 11.756L 1/21112.756 1/4M12 6 1/2M 1/213146 3/4N  7N 1/21415.257 1/40  7 1/20 1/21516.57 3/4P  8P 1/21617.758 1/4Q  8 1/2Q 1/217 8 3/4R 199R 1/218 9 1/4S 20.259 1/2S 1/219 9 3/4T 21.510T 1/220 10 1/4U21 10 1/2U 1/22222.7510 3/4V  11V 1/223 11 1/4W 2511 1/2W 1/224 11 3/4X  12X 1/22527.512 1/4Y  12 1/2Z2628.7512 3/4Z 1/2  13 27 13 1/4Z1  13 1/213 3/4Z214Z314 1/414 1/2Z414 3/41515 1/415 1/215 3/416

International Ring Size Conversion Chart
US / Canada British Irish Australian
1/4
1/2 A
3/4 A 1/2
1 B 1

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feet0.0328 metres0.01 millimetres10metrescentimetres100 feet3.281 inches39.37inchescentimetres2.54 feet0.0833 metres0.0254 yards0.0278yardsinches36 feet3 metres0.914grammesounces0.035 pounds0.002 kilogrammes0.001ouncesgrammes28.35 pounds0.0625 kilogrammes0.028poundsgrammes453.59 ounces16 kilogrammes0.454

Lengths and Weights Conversion Chart
To Convert… Into… Multiply By…
centimetres inches 0.394

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26 dead soft350g400g26 soft450g500g26 half hard600g650g26 hard900g1000g24 dead soft1250g1500g24 half hard1700g2000g22 soft4000gover 4000g

Wire Wrap Strength Standards Chart
Wire Guage Acceptable Weight Stretch-Causing Weight

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smallless 0.5261small0.5 ~ 0.8262 ~ 3medium0.8 ~ 1241medium1.1 ~ 1.5242 ~ 3medium ~ big1.6 ~ 1.8221medium ~ big1.9 ~ 2.5222 ~ 3bigover 2.5201 ~ 2

Wire Guages vs Stone and Drill Hole Sizes
Stone Size Hole Diameter (mm) Wire Guage # Wrap Times

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