I often have people ask me how many beads are in a tube of seed beads, so here is the approximate number of seed beads in a gram.

Seed Bead Sizes Counts and Weights
Type Size size/mm Count/Gram Inches/Gram tube size(in)** grams/tube Count/tube
Round 6/0 3.7 18 10 5" x 9/16" 24 432
Round 8/0 3 38 13 5" x 9/16" 24 912
Round 11/0 2.2 110 19 5" x 9/16" 24 2640
Round 15/0 1.5 250 25 4x3/8" 11 2750
Bugle 3mm 3 90 8.5 5" x 9/16" 19 1710
6mm 6 38 4 5" x 9/16" 18 684
12mm 12 9 2 5" x 9/16" 15 135
Cubes 1.5mm 1.5 87 15 5" x 9/16" 22 1914
3mm 3 21 8.5 5" x 9/16" 22 462
4mm 4 12 6 5" x 9/16" 20 240
Delica 8/0 3.0x2.75L 30 9 4x3/8" 8 240
10/0 2.2x1.7L 108 15 4x3/8" 9 972
11/0 1.6x1.3L 200 20 4x3/8" 9 1800
Drops 3.4mm 3.4 20 5" x 9/16" 25 500
Hex 8/0 3 43 13 5" x 9/16" 22 946
11/0 2.2 110 19 5" x 9/16" 22 2420
Peanut 2x4 33 5" x 9/16"
Berry 2.5x4.5 24 5" x 9/16" 25 600
25
Magatama 7x4mm 7x4 8 5" x 9/16" 22 176
Tila Full 5x5 11 5  1" x 1 1/2" x 7/16" 10 110
Half 5x2.3 22 11  1" x 1 1/2" x 7/16" 10 220
Triangles 8/0 3 45 13 5" x 9/16" 22 990
11/0 2.2 72 19 5" x 9/16" 22 1584
** Some exceptions apply for plated seed beads in half size tubes