How can I use these bead sizes to plan my jewelry designs?

How many beads will I need for an 8" bracelet?

Bead Size (mm) ~ amount needed for 8" (large wrist ) bracelet
2mm 100
3mm 65
4mm 50
6mm 33
8mm 25
10mm 20
12mm 17

Use these numbers to calculate your bead needs:
For a 8" bracelet (large wrist), using 10mm beads,
you will need 20 beads. You will need LESS if you're also adding spacers or other accents.

How many beads in a 16" strand?

2mm 200
3mm 130
4mm 100
6mm 65
8mm 50
10mm 40
12mm 34