Jewelry Maker Conversion Charts

Drag any slider. Everything updates instantly, no math required.

Bead Size Comparison

See any bead size next to a penny face-on, plus a stack of pennies matching the bead's height. Everything is drawn to exact relative scale.

8 mm
US penny obverse
Penny · 19.05 mm

Screens vary, so sizes on your display may not be life size. The bead and coins are always in true proportion to each other, so compare against a real penny from your pocket.

Wire Gauge to Millimeters

American Wire Gauge (AWG). Higher gauge means thinner wire.

24 ga

Millimeters to Inches

Quick conversion for bead sizes, cabochons, and findings.

10 mm

Beads per Strand

How many beads fit on a strand or finished piece. Common strands are 7.5″ bracelets and 15–16″ temporary strands.

16 in
8 mm

Counts are approximate. Knotting between beads or adding spacers lowers the count.

Necklace Length Guide

Standard necklace styles by finished length.

18 in

Ring Size Converter

US sizes converted to UK letters, EU sizes, and millimeters.

US 7

Weight Converter

Grams, ounces, and carats for stones and metals.

20 g

Seed Bead Sizes

Seed beads use aught sizing. The bigger the first number, the smaller the bead.

Aught sizeApprox. diameterBeads per inch
15/01.5 mm~17
11/02.1 mm~12
8/03.1 mm~8
6/04.1 mm~6