Print this page and cut out the bracelet ruler.
Make sure to uncheck all "scale to fit" checkboxes when printing.

Wrap the ruler around your wrist or ankle where you want the bracelet to rest, and read the number where the ends overlap.
This will be your bracelet size.

If you prefer a snug fit, use the actual measured circumference of your wrist.
If you like a draping, looser fit, increase your measurement by a ¼ or ½ depending on your taste. Also, remember that larger link bracelets may fit more tightly than thin bracelets. Some customers purchase a slightly larger size so they have something to work with incase growth is a factor.