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Ksubi to Universal Standard jeans size

The short answer

Ksubi 1 is Universal Standard 00 by the two brands' own charts. 9 of 12 Ksubi sizes land on a different label at Universal Standard.

Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.

On 1 sizes the charts land two or more sizes from the same label. Brands do not measure the body the same way, so on those rows treat the chart answer and the same label as the two ends of a range.

Every Ksubi size read across to Universal Standard. US numeric sizes on the left, US numeric on the right.
KsubiKsubi builds it forUniversal Standard, by chartSame labelUniversal Standard builds it forUniversal Standard also prints
0waist 22.5 in, hip 33 innot made00not publishednot published
1waist 23.5 in, hip 34 in00not publishedwaist 24 to 25 in, hip 34 to 35 inLetter 4XS
2waist 24.5 in, hip 35 in002waist 24 to 25 in, hip 34 to 35 inLetter 4XS
3waist 25.5 in, hip 36 in0not publishedwaist 25 to 26 in, hip 35 to 36 inLetter 4XS
4waist 26.5 in, hip 37 in24waist 26 to 27 in, hip 36 to 37 inLetter 3XS
5waist 27.5 in, hip 38 in4not publishedwaist 27 to 28 in, hip 37 to 38 inLetter 3XS
6waist 28.5 in, hip 39 in66waist 28 to 29 in, hip 38 to 39 inLetter 2XS
7waist 29.5 in, hip 40 in8not publishedwaist 29 to 31 in, hip 39 to 40 inLetter 2XS
8waist 30.5 in, hip 41 in88waist 29 to 31 in, hip 39 to 40 inLetter 2XS
9waist 31.5 in, hip 42 in8 or 10not publishedwaist 29 to 31 in, hip 39 to 40 inLetter 2XS
10waist 32.5 in, hip 43 in10 or 810waist 33 to 35 in, hip 42 to 44 inLetter XS
11waist 33.5 in, hip 44 in10not publishedwaist 33 to 35 in, hip 42 to 44 inLetter XS
12waist 34.5 in, hip 45 in1012waist 33 to 35 in, hip 42 to 44 inLetter XS
Tinted rows change label or sit between two sizes. 1 sizes have no counterpart on the Universal Standard 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.

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Sources

Universal Standard to Ksubi