TrueToSize

Convert / Jeans

Reformation to Universal Standard jeans size

The short answer

Reformation 30 is Universal Standard 8 or 10 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 Universal Standard. Waist size sizes on the left, US numeric on the right.
ReformationReformation builds it forUniversal Standard, by chartSame labelUniversal Standard builds it forUniversal Standard also prints
23waist 23.5 in, hip 34 in00not publishedwaist 24 to 25 in, hip 34 to 35 inLetter 4XS
24waist 24.5 in, hip 35 in00not publishedwaist 24 to 25 in, hip 34 to 35 inLetter 4XS
25waist 25.5 in, hip 36 in0not publishedwaist 25 to 26 in, hip 35 to 36 inLetter 4XS
26waist 26.5 in, hip 37 in2not publishedwaist 26 to 27 in, hip 36 to 37 inLetter 3XS
27waist 27.5 in, hip 38 in4not publishedwaist 27 to 28 in, hip 37 to 38 inLetter 3XS
28waist 28.5 in, hip 39 in6not publishedwaist 28 to 29 in, hip 38 to 39 inLetter 2XS
29waist 30 in, hip 40.5 in8not publishedwaist 29 to 31 in, hip 39 to 40 inLetter 2XS
30waist 31.5 in, hip 42 in8 or 10not publishedwaist 29 to 31 in, hip 39 to 40 inLetter 2XS
31waist 33.3 in, hip 43.8 in10not publishedwaist 33 to 35 in, hip 42 to 44 inLetter XS
32waist 38.5 in, hip 49 in14not publishedwaist 37 to 39 in, hip 46 to 48 inLetter S
33waist 39 in, hip 50 in14not publishedwaist 37 to 39 in, hip 46 to 48 inLetter S
34waist 40 in, hip 51 in16not publishedwaist 39 to 41 in, hip 48 to 50 inLetter S
35waist 41 in, hip 52 in16not publishedwaist 39 to 41 in, hip 48 to 50 inLetter S
36waist 42 in, hip 53 in18not publishedwaist 41 to 43 in, hip 50 to 52 inLetter M
38waist 44 in, hip 55 in20not publishedwaist 43 to 45 in, hip 52 to 54 inLetter M
Tinted rows change label or sit between two sizes. 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

Universal Standard to Reformation