Should thick socks mean a bigger shoe?

Only if the midfoot or toebox is crushed with the sock you will wear. Prefer the model’s length advice first.

Thin socks preserve the intended low-volume fit; thick hikers often force a half up for width.

Boots and wool socks?

See winter boot sizing and thick-socks hubs — many heritage boots already run long.

Socks and shoe fit — narrow vs wide lasts

Socks and shoe fit

Sock thickness changes volume more than labeled length. Pair sock choice with the last: narrow terrace shoes hate thick hikers; roomy boots and wide lasts forgive more.

Which sock with which last?

Narrow lasts (Samba, some Gazelle) — thin dress / no-show first; thick socks often need half up for width, not length. Samba OG · narrow hub.
Roomy lifestyle (AF1, some NB) — normal crew socks usually fine; thick socks can erase a careful half-down. AF1.
Boots / winter — size for the sock you will wear outdoors; see winter boot sizing and thick socks & orthotics.
Wide lasts / roomy clogs — sock choice is comfort, not usually a full size change. wide feet.

Practical shopping

One tagged search for denser socks (not a sock storefront dump): Amazon.com.tr sock search. Prefer trying the shoe with the sock you will actually wear.

Between sizes · Measure cm

FAQ

Should thick socks mean a bigger shoe?: Only if the midfoot or toebox is crushed with the sock you will wear. Prefer the model’s length advice first.
Best sock for Samba?: Thin socks preserve the intended low-volume fit; thick hikers often force a half up for width.
Boots and wool socks?: See winter boot sizing and thick-socks hubs — many heritage boots already run long.