Berlei to Brooks bra size

The short answer

Berlei 12D is Brooks L by the two brands' own charts.

The target brand lists the bra sizes each of its sizes covers; rows are read from that list.

Every Berlei size read across to Brooks. AU sizes on the left, Letter on the right.
Berlei	Brooks, by chart	Same label	Brooks also prints
12A	M	not published	not published
12B	M	not published	not published
12C	M	not published	not published
12D	L	not published	not published
12DD	L	not published	not published
12E	XL	not published	not published
12F	not made	not published	not published
12G	not made	not published	not published
12H	not made	not published	not published

Neither chart publishes the body each size is built for, so the rows line up the labels. Tinted rows change label or sit between two sizes. 3 sizes have no counterpart on the Brooks 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 converter Add an item you own

Sources

Berlei size guide, read on 2026-09-18.
Brooks size guide, read on 2026-09-18. Brooks on TrueToSize

Brooks to Berlei