How Many Beads Do I Need for a Bracelet?
The quick answer, for the most common case: a seven-inch bracelet made from 8 mm beads takes about 22 beads. That covers the majority of adult wrists and the most popular bead size, and it's the number worth committing to memory.
Everything else follows from one simple sum: divide the length you want by the size of your bead.
The sum, in plain terms
An inch is 25.4 millimetres. So a seven-inch bracelet is 178 millimetres of beads, and 178 divided by 8 gives just over 22. Change the bead size and the count changes with it: 6 mm beads need about 30, and 10 mm beads about 18.
Skip the arithmetic
Our bead sizer and bracelet planner does all of this for you. Match a bead against true-size circles on your screen to find its diameter, then choose your bracelet or necklace length and it counts the beads, allows for spacers, tells you how many strands to buy and how much cord to cut.
Bead counts at a glance
For a standard 7-inch bracelet: 4 mm beads need about 45, 6 mm about 30, 8 mm about 22, 10 mm about 18, and 12 mm about 15. For an 18-inch necklace, multiply those figures by roughly two and a half.
How spacers change things
Spacer beads sit between the main beads and change the count considerably, because each one takes up room on the cord. If you're alternating 8 mm beads with 2 mm spacers, each pair occupies 10 mm rather than 8 — so a seven-inch bracelet needs about 18 main beads and 18 spacers rather than 22 beads alone.
It's worth planning this before you order, since it's easy to buy enough main beads and forget the spacers entirely.
Choosing a bead size
- 4 mm — dainty and delicate. Lovely for layering several thin bracelets together.
- 6 mm — gentle and neat, and a good choice for smaller wrists or children's jewellery.
- 8 mm — the most popular size by some margin, and what most stretch-bracelet kits use.
- 10 mm — bold and noticeable, often chosen for men's bracelets.
- 12 mm and larger — real statement pieces. Beautiful, but check the weight before committing to a long necklace.
Buying by the strand
Gemstone and glass beads usually come on 15 or 16 inch strands rather than sold individually. A 16-inch strand holds roughly 50 beads at 8 mm, 40 at 10 mm and 33 at 12 mm — so one strand comfortably makes two bracelets in most sizes, which is handy when making a matching pair as gifts.
A word on elastic cord
Cut your cord about three inches longer than the finished bracelet. That gives you enough to hold while threading, to pull the knot properly tight, and to tuck the ends back inside a bead where they won't show. Use a surgeon's knot and then a second knot over it — everyone who has chased beads across a kitchen floor will tell you why.
A dab of clear jewellery glue on the finished knot before you tuck it away is a small step that adds years to a bracelet's life.
What about seed beads?
Seed beads use an older numbering system that runs backwards: the larger the number, the smaller the bead. A 6/0 is about 4 mm across, an 8/0 about 3 mm, an 11/0 about 2 mm and a 15/0 around 1.5 mm. If you're measuring seed beads, read the millimetres and match them against those figures.