How to Use the Bead Craft Quantity Calculator
When making a bracelet or necklace, it's easy to underestimate how many beads you'll actually need and end up buying more mid-project. This calculator takes your target finished length (cm) and the diameter of the beads you're using (mm), then instantly calculates how many beads you need. Selecting a project type — bracelet, necklace, or anklet — automatically fills in a typical default length, which is handy if you're not sure where to start. The result also includes a 10% buffer to account for size variation and beads that break or get lost during work, so buying based on that buffered number helps you avoid running short mid-project.
Typical Length by Project Type
| Project | Typical Length |
|---|---|
| Bracelet | 16-20cm |
| Necklace | 40-50cm |
| Anklet | 22-26cm |
Frequently Asked Questions
Bead sizes vary slightly and some may break or get lost, so a 10% buffer is a safe margin.
This is a simple estimate based on diameter alone, so designs with many knots may need slightly more.