Sock Sizing Guide

Confluence Running Sizing Guide

A running sock should disappear on your foot.

Use shoe-size ranges as a starting point, then check heel placement, toe fit and fabric tension. A sock that bunches or stretches excessively is telling you something.

Quick fit check: the heel pocket should sit on your heel, the toe should lie smooth without extra folds, and the fabric should feel secure without creating pressure points.

What good sock sizing looks like

Heel pocketThe shaped heel of the sock should align with your actual heel rather than sitting underneath the foot or climbing up the Achilles.
Toe areaThe fabric should sit smooth across the toes without bunching, folding or pulling tightly across the tips.
Overall tensionThe sock should stay in place without feeling overstretched, restrictive or loose enough to move inside the shoe.

Use shoe-size ranges as the starting point

Most running-sock brands group multiple shoe sizes into one sock size. If your shoe size falls near the boundary between two sock sizes, use the brand's current chart and then consider foot volume and fit preference.

If you are between sizes: a lower-volume foot may prefer the smaller range for a closer fit, while a higher-volume foot may be more comfortable in the larger range. The final test is whether the sock stays smooth and secure during movement.

Sock height does not change foot size

No-show, quarter, crew and over-the-calf versions may share the same foot-size range. Height describes coverage, not the size of the foot. Compression socks are different: calf circumference and sometimes ankle measurements can matter in addition to shoe size.

Need everyday or performance socks?

Start with your shoe size, then use the fit checks above to confirm the range works for your foot.

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