Events and games
Shoe size chart (JIS S 5037:1998 — reading girth from foot length and width)
Shoe sizing as a nomogram: 25.0 EE and 26.0 E are the same girth
This drawing comes from one YAML file. No shape was moved by hand.
Notes in the source (in Japanese)
靴のサイズは、靴ではなく足の寸法(足入れサイズ)。足長はかかとからいちばん長い指まで、足囲は親指と小指の付け根の一周。
JIS S 5037:1998 では、ワイズが 1 段上がると足囲 +6mm(足幅 +2mm)、足長が 0.5cm 増えると、同じワイズで足囲 +3mm。だから「25.0cm の EE」と「25.5cm の E」は足囲が近い。
表の数字は、足長 24.0cm の E = 237mm を起点に、この 2 つの刻みから計算した。照合(2026-10-02):JIS S 5037:1998 の表を写した靴店の表(24.0 E 237・25.0 E 243/EE 249、男性 A〜G、女性 A〜EEEE)と一致。https://www.parashoe.co.jp/shoes/jis
Source (YAML)
examples/gallery/178-靴のサイズの図.zumen.yaml
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