TrueToSize

Convert / Jeans

Reformation to Gap jeans size

The short answer

Reformation 30 is Gap 12 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 Gap. Waist size sizes on the left, US numeric on the right.
ReformationReformation builds it forGap, by chartSame labelGap builds it forGap also prints
23waist 23.5 in, hip 34 innot madenot publishednot publishednot published
24waist 24.5 in, hip 35 in00not publishedwaist 24.8 in, hip 34.3 inLetter XXS
25waist 25.5 in, hip 36 in0not publishedwaist 25.5 in, hip 35.3 inLetter XS
26waist 26.5 in, hip 37 in2not publishedwaist 26.5 in, hip 36.3 inLetter XS
27waist 27.5 in, hip 38 in4not publishedwaist 27.5 in, hip 37.3 inLetter S
28waist 28.5 in, hip 39 in6not publishedwaist 28.5 in, hip 38.3 inLetter S
29waist 30 in, hip 40.5 in8 or 10not publishedwaist 29.5 in, hip 39.3 inLetter M
30waist 31.5 in, hip 42 in12not publishedwaist 32 in, hip 41.8 inLetter L
31waist 33.3 in, hip 43.8 in14not publishedwaist 33.5 in, hip 43.3 inLetter L
32waist 38.5 in, hip 49 in18 or 20not publishedwaist 37.5 in, hip 47.3 inLetter XL
33waist 39 in, hip 50 in20not publishedwaist 39.5 in, hip 49.3 inLetter XXL
34waist 40 in, hip 51 in20not publishedwaist 39.5 in, hip 49.3 inLetter XXL
35waist 41 in, hip 52 in22not publishedwaist 41.5 in, hip 51.3 inLetter XXL
36waist 42 in, hip 53 in22not publishedwaist 41.5 in, hip 51.3 inLetter XXL
38waist 44 in, hip 55 innot madenot publishednot publishednot published
Tinted rows change label or sit between two sizes. 2 sizes have no counterpart on the Gap 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

Gap to Reformation