Read the measurements before comparing strands
Separate overall length, usable length, widest diameter and circumference.
Compare the same numbers
The widest diameter is a straight line across the widest section. Circumference measures around it. Compare diameters with diameters and make sure the listed width applies to a bead rather than a base.
Separate the ends from the usable length
Overall length may include a grip or ring. A listing that gives two lengths can be easier to compare than one with an unqualified number. Ask which number includes the handle.
Check the range for graduated designs
A tapered strand can start narrow and end much wider. Check both ends. A larger size is not a goal, and a listing measurement is not an instruction for use.