Berlei to Triumph bra size

The short answer

Berlei 12DD is Triumph 75E by the two brands' own charts.

Cups are counted along each brand's own letter order, and the band is carried across unchanged.

Every Berlei size read across to Triumph. AU sizes on the left, EU on the right.
Berlei	Berlei builds it for	Triumph, by chart	Same label	Triumph builds it for	Triumph also prints
12A	not published	75A	not published	not published	UK A · US A · FR A · AU A
12B	not published	75B	not published	not published	UK B · US B · FR B · AU B
12C	not published	75C	not published	not published	UK C · US C · FR C · AU C
12D	not published	75D	not published	not published	UK D · US D · FR D · AU D
12DD	not published	75E	not published	not published	UK DD · US DD · FR E · AU DD
12E	not published	75F	not published	not published	UK E · US DDD · FR F · AU E
12F	not published	75G	not published	not published	UK F · US G · FR G · AU F
12G	not published	75H	not published	not published	UK G · US H · FR H · AU G
12H	not published	75I	not published	not published	UK H · US I · FR I · AU H

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 converter Add an item you own

Sources

Berlei size guide, read on 2026-09-18.
Triumph size guide, read on 2026-09-18.

Triumph to Berlei