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Convert / Shoes

Altra to lululemon shoe size

The short answer

Altra 5.5 is lululemon 5 by the two brands' own charts. 8 of 13 Altra sizes land on a different label at lululemon.

Both brands publish the foot length each size is built for, so every row matches a foot, not a label.

Every Altra size read across to lululemon. US women's sizes on the left, US women's on the right.
AltraAltra builds it forlululemon, by chartSame labellululemon builds it forlululemon also prints
4foot length 20.5 cmnot madenot publishednot publishednot published
4.5foot length 21 cmnot madenot publishednot publishednot published
5foot length 21.5 cmnot made5not publishednot published
5.5foot length 22 cm55.5foot length 22 cmUK 3.5 · EU 36 · CM / JP 22
6foot length 22.5 cm5.56foot length 22.5 cmUK 4 · EU 36.5 · CM / JP 22.5
6.5foot length 23 cm66.5foot length 23 cmUK 4.5 · EU 37 · CM / JP 23
7foot length 23.5 cm6.57foot length 23.5 cmUK 5 · EU 38 · CM / JP 23.5
7.5foot length 24 cm77.5foot length 24 cmUK 5.5 · EU 38.5 · CM / JP 24
8foot length 24.5 cm88foot length 24.5 cmUK 6.5 · EU 40 · CM / JP 24.5
8.5foot length 25 cm8.58.5foot length 25 cmUK 7 · EU 40.5 · CM / JP 25
9foot length 25.5 cm99foot length 25.5 cmUK 7.5 · EU 41 · CM / JP 25.5
9.5foot length 26 cm9.59.5foot length 26 cmUK 8 · EU 42 · CM / JP 26
10foot length 26.5 cm1010foot length 26.5 cmUK 8.5 · EU 42.5 · CM / JP 26
10.5foot length 27 cm1110.5foot length 27 cmUK 9.5 · EU 43.5 · CM / JP 27
11foot length 27.5 cm11.511foot length 27.5 cmUK 10 · EU 44 · CM / JP 27.5
11.5foot length 28 cm1211.5foot length 28 cmUK 10.5 · EU 45 · CM / JP 28
12foot length 28.5 cmnot made12not publishednot published
13foot length 29.5 cmnot madenot publishednot publishednot published
Tinted rows change label or sit between two sizes. 5 sizes have no counterpart on the lululemon chart. Read from the two charts only; no formula and no averaging.

What wearers say

Charts describe a garment. People who own both brands describe a fit, and their answer ranks above this table once five of them stand behind it. Pick your size in the converter to see whether there are enough yet.

Open in the converterAdd an item you own

Sources

lululemon to Altra