Bracelet Bead Count Calculator
Wrist + bead size → exact beads to string, with knot allowance, pattern repeats, and cord length. No more 87 beads vs a bag of 80.
Women avg ≈ 6.5–7", men avg ≈ 7.5–8". Measure with a string + ruler, snug where you want the bracelet to sit
Stretch cord sits 0.25–0.5" snugger than a rigid bangle of the same wrist. The result adds knot allowance built in (see math section).
—beads to string (+ knot allowance)
—beads per inch at this size
—cord to cut (with knot + stretch tail)
—pattern repeats (ABAC-style)
—buy this many (design 3 sizes at once)
—approx strand weight
How the math works
- Beads per inch =
25.4 ÷ bead mm. 6 mm → 4.23/in; 8 mm → 3.18; 10 mm → 2.54; 4 mm → 6.35. - Count =
wrist × beads-per-inch, rounded to nearest whole, then round for the knot: add 1 bead at 4–6 mm (a knot eats ~1 mm, not a whole bead, the allowance is for design wiggle at 7.25/7.75", the two sizes shops stock). - Stretch cord: cut
wrist + 1.5"(knot tails ~0.7" total + the square-knot's bulk). Elastic cord stretches ~10% over beads during stringing, cutting snug keeps finished size true. - Pattern repeats = floor(bead count ÷ pattern length): a 6-bead ABACAB run fits 4× in 26 beads, 4 left over, the tool shows repeats + remainder so you know the tail.
- Strand weight: glass 6 mm ≈ 0.6 g/bead, stone ≈ 0.9 g, wood ≈ 0.25 g, shipped ounce math for sellers.
Hole size changes reality: chip/spoon beads nest, big-hole beads sit off-axis on cord, ±10% on count. Measure your bead with a caliper if the design is tight. Craft-store strand counts vary; count your own strand before buying.
Frequently asked
How many 8mm beads for a bracelet?
A 7-inch wrist needs ~22 beads of 8 mm (3.18 per inch), 23 with the knot allowance. 7.5" → 24; 8" → 25.
How many 6mm beads for a bracelet?
7" wrist: ~29–30 beads. 6 mm is the workhorse size: 4.23 beads per inch, so a 7.5" stretch bracelet takes 31–32.
How many beads for a 7 inch bracelet?
Divide 7 × 25.4 ÷ bead mm: 4 mm → 44, 6 mm → 29, 8 mm → 22, 10 mm → 17, 12 mm → 14. Add one for the knot and you have the stringing count.