WORKSHOP REFERENCE CHART

Jewelry Gauge Conversion Chart

Convert common jewelry wire and sheet gauges to millimeters and inches with a practical workshop reference chart for jewelry making, silversmithing and metalsmithing.

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Jewelry gauge conversion chart showing wire and sheet metal thickness reference for jewelry making

What Is Jewelry Gauge?

Gauge is a numbering system used to describe the thickness or diameter of wire and sheet metal. In jewelry making, gauge is commonly used for wire, bezel strip, jump rings, ear wires, sheet metal and structural fabrication parts.

The confusing part is that gauge numbers work backwards: a smaller gauge number usually means thicker metal, while a larger gauge number means thinner metal.

Workshop note: Gauge systems can vary by country and material type. For jewelry work, always confirm the actual millimeter measurement with calipers when fit, stone setting or soldering accuracy matters.

AWG To Millimeter Conversion Chart

This chart uses common AWG / Brown & Sharpe gauge values often used by jewelers and metalsmiths. Use it as a practical bench reference for wire and sheet thickness planning.

Gauge Millimeters Inches Common Jewelry Use
10 ga 2.59 mm 0.102 in Heavy bangles, structural work
12 ga 2.05 mm 0.081 in Heavy rings, cuffs, forged elements
14 ga 1.63 mm 0.064 in Heavy ring shanks, bangles
16 ga 1.29 mm 0.051 in Ring shanks, jump rings, heavier findings
18 ga 1.02 mm 0.040 in Ring bands, pendants, strong findings
20 ga 0.812 mm 0.032 in Ear wires, bezels, light findings
22 ga 0.644 mm 0.025 in Light wirework, wrapping, small components
24 ga 0.511 mm 0.020 in Bezel wire, fine wrapping, thin sheet
26 ga 0.405 mm 0.016 in Fine bezels, delicate wirework
28 ga 0.321 mm 0.013 in Very fine wirework, lightweight details
30 ga 0.255 mm 0.010 in Fine decorative work, delicate wrapping
32 ga 0.202 mm 0.008 in Very fine decorative or specialty work

Common Jewelry Gauges

Jewelry gauge choice depends on the part being made, the metal, the design and how much strength the finished piece needs.

  • 24 gauge: often used for fine bezel wire and lightweight sheet work.
  • 22 gauge: useful for light wirework, wrapping and small decorative parts.
  • 20 gauge: common for ear wires, light findings and some bezel work.
  • 18 gauge: useful for stronger findings, ring elements and small structural parts.
  • 16 gauge: often used for heavier jump rings, ring shanks and stronger wire components.
  • 14 gauge and thicker: used for heavy rings, bangles, cuffs and forged pieces.

Wire Gauge vs Sheet Gauge

Wire gauge usually refers to the diameter of round wire. Sheet gauge refers to the thickness of flat sheet metal. The same gauge number can be used in both contexts, but the practical use at the bench can be very different.

For example, 20 gauge round wire might be useful for ear wires or small findings, while 20 gauge sheet may be used for light pendants, backplates or pierced designs.

Practical rule: Use gauge as a quick reference, but use millimeters when precision matters. Millimeters are easier to measure, compare and use in calculators.

Why Millimeters Are Better For Jewelry Calculations

Gauge is convenient when ordering metal, but millimeters are more useful when calculating ring blanks, bezel height, stone settings, template scale and fabrication layouts.

If you are using the Jewelry Calculator, convert gauge to millimeters first and enter the actual measured thickness whenever possible.

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