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Convert / Jeans

Good American to Reformation jeans size

The short answer

Good American 12 is Reformation 31 or 30 by the two brands' own charts.

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

Every Good American size read across to Reformation. US numeric sizes on the left, Waist size on the right.
Good AmericanGood American builds it forReformation, by chartSame labelReformation builds it forReformation also prints
00waist 24.5 in, hip 36 in24not publishedwaist 24.5 in, hip 35 innot published
00waist 24.5 in, hip 36 in24not publishedwaist 24.5 in, hip 35 innot published
2waist 26.5 in, hip 38 in26not publishedwaist 26.5 in, hip 37 innot published
4waist 27.5 in, hip 39 in27not publishedwaist 27.5 in, hip 38 innot published
6waist 28.5 in, hip 40 in28not publishedwaist 28.5 in, hip 39 innot published
8waist 29.5 in, hip 41 in29not publishedwaist 30 in, hip 40.5 innot published
10waist 31 in, hip 42.5 in30not publishedwaist 31.5 in, hip 42 innot published
12waist 32.5 in, hip 44 in31 or 30not publishedwaist 33.3 in, hip 43.8 innot published
14waist 34 in, hip 45.5 in31not publishedwaist 33.3 in, hip 43.8 innot published
15 Pluswaist 37 in, hip 48 in32not publishedwaist 38.5 in, hip 49 innot published
16 Pluswaist 39 in, hip 50 in33not publishedwaist 39 in, hip 50 innot published
18 Pluswaist 41 in, hip 52 in35not publishedwaist 41 in, hip 52 innot published
20 Pluswaist 43 in, hip 54 in36 or 38not publishedwaist 42 in, hip 53 innot published
22 Pluswaist 45 in, hip 56 in38not publishedwaist 44 in, hip 55 innot published
24 Pluswaist 47 in, hip 58 innot madenot publishednot publishednot published
26 Pluswaist 49 in, hip 60 innot madenot publishednot publishednot published
28 Pluswaist 51 in, hip 62 innot madenot publishednot publishednot published
30 Pluswaist 53 in, hip 64 innot madenot publishednot publishednot published
32 Pluswaist 55 in, hip 66 innot madenot publishednot publishednot published
Tinted rows change label or sit between two sizes. 5 sizes have no counterpart on the Reformation 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

Reformation to Good American