How Big Is a 4mm Bead?

Standard strands of beads are roughly 16 inches long; a strand of 4mm beads yields roughly 100 beads. If there are no knots or stitches between each bead, a crafter can calculate that it takes 6.35 4mm beads to take up 1 inch of linear space.

A 4mm bead is slightly larger than a size 6 bead, which measures 3.7 millimeters. Due to their small size, 4mm beads are generally available in fairly simple shapes, most often in rounds and cubes.