TrueToSize

Convert / Jeans

Reformation to Good American jeans size

The short answer

Reformation 31 is Good American 12 or 14 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 Reformation size read across to Good American. Waist size sizes on the left, US numeric on the right.
ReformationReformation builds it forGood American, by chartSame labelGood American builds it forGood American also prints
23waist 23.5 in, hip 34 innot madenot publishednot publishednot published
24waist 24.5 in, hip 35 in00not publishedwaist 24.5 in, hip 36 innot published
25waist 25.5 in, hip 36 in0not publishedwaist 25.5 in, hip 37 innot published
26waist 26.5 in, hip 37 in2not publishedwaist 26.5 in, hip 38 innot published
27waist 27.5 in, hip 38 in4not publishedwaist 27.5 in, hip 39 innot published
28waist 28.5 in, hip 39 in6not publishedwaist 28.5 in, hip 40 innot published
29waist 30 in, hip 40.5 in8not publishedwaist 29.5 in, hip 41 innot published
30waist 31.5 in, hip 42 in10not publishedwaist 31 in, hip 42.5 innot published
31waist 33.3 in, hip 43.8 in12 or 14not publishedwaist 32.5 in, hip 44 innot published
32waist 38.5 in, hip 49 in16 Plusnot publishedwaist 39 in, hip 50 innot published
33waist 39 in, hip 50 in16 Plusnot publishedwaist 39 in, hip 50 innot published
34waist 40 in, hip 51 in16 Plus or 18 Plusnot publishedwaist 39 in, hip 50 innot published
35waist 41 in, hip 52 in18 Plusnot publishedwaist 41 in, hip 52 innot published
36waist 42 in, hip 53 in18 Plus or 20 Plusnot publishedwaist 41 in, hip 52 innot published
38waist 44 in, hip 55 in20 Plus or 22 Plusnot publishedwaist 43 in, hip 54 innot published
Tinted rows change label or sit between two sizes. 1 sizes have no counterpart on the Good American 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

Good American to Reformation