Bead Hole Size Chart
One of the most common questions in beading is, 'What size cord or wire will fit through my beads?' This bead hole size chart can help you estimate compatibility between beads and stringing materials.
Bead hole sizes can vary depending on the bead material, manufacturer, production lot, and finish. This chart provides approximate hole size ranges for common bead sizes and bead types to help you select compatible wire, cord, thread, needles, and findings. When precise fit is important, we recommend testing your materials before beginning your project.
| Bead Type |
Typical Bead Size |
Approx. Hole Size |
Suggested Thread / Cord |
Suggested Wire Gauge |
| Seed Beads 15/0 |
1.3 mm |
.40 - .65 mm |
A, OO, O |
28-30 Gauge |
| Seed Beads 11/0 |
2.1 mm |
.70 - .80 mm |
O, B, D |
26-28 Gauge |
| Seed Beads 8/0 |
3.1 mm |
.90 - 1.5 mm |
D, F |
22-26 Gauge |
| Round Glass Beads |
4-8 mm |
.8 - 1.2 mm |
D, F, Beading Cord |
20-24 Gauge |
| Crystal Beads |
4-10 mm |
.8 - 1.3 mm |
Beading Wire, Nymo |
20-24 Gauge |
| Wood Beads |
6-20 mm |
1.5 - 4 mm |
Cord, Leather, Ribbon |
16-20 Gauge |
| Pony Beads |
6 x 9 mm |
3 - 4 mm |
Craft Lace, Chenille Stems, Cord |
Not Typically Used |
| Large-Hole Beads |
8-20 mm |
4 mm+ |
Leather, Ribbon, Thick Cord |
16-18 Gauge |
Note: Hole sizes are approximate and may vary by manufacturer, bead finish, production lot, and bead shape. Always test materials before beginning a project requiring a precise fit.
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