Onitsuka Tiger to lululemon men's shoe size

The short answer

Onitsuka Tiger 13.5 is lululemon 13 or 14 by the two brands' own charts. 1 of 15 Onitsuka Tiger sizes land on a different label at lululemon.

At least one of the two brands publishes no foot length, so the rows line up the US size both charts print. Treat it as the label conversion, not a fit.

Every Onitsuka Tiger size read across to lululemon. US men's sizes on the left, US men's on the right.
Onitsuka Tiger	lululemon, by chart	Same label	lululemon also prints
4	not made	not published	not published
4.5	not made	not published	not published
5	not made	not published	not published
5.5	not made	not published	not published
6	not made	not published	not published
6.5	not made	not published	not published
7	7	not published	UK 6.5 · EU 40
7.5	7.5	not published	UK 7 · EU 40.5
8	8	not published	UK 7.5 · EU 41
8.5	8.5	not published	UK 8 · EU 42
9	9	not published	UK 8.5 · EU 42.5
9.5	9.5	not published	UK 9 · EU 43
10	10	not published	UK 9.5 · EU 43.5
10.5	10.5	not published	UK 10 · EU 44
11	11	not published	UK 10.5 · EU 45
11.5	11.5	not published	UK 11 · EU 45.5
12	12	not published	UK 11.5 · EU 46
12.5	12.5	not published	UK 12 · EU 47
13	13	not published	UK 12.5 · EU 47.5
13.5	13 or 14	not published	UK 12.5 · EU 47.5
14	14	not published	UK 13.5 · EU 48.5

Neither chart publishes the body each size is built for, so the rows line up the labels. Tinted rows change label or sit between two sizes. 6 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, not a fit. We do not collect fit reports for this category yet, so this table is the two brands' own claims and nothing more.

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Sources

Onitsuka Tiger size guide, read on 2026-09-25. Onitsuka Tiger on TrueToSize
lululemon size guide, read on 2026-09-18. lululemon on TrueToSize

lululemon to Onitsuka Tiger