Bras

Bra size calculator and conversion chart

Enter your underbust and bust – get your bra size in EU, UK, US and French systems plus your sister sizes.

Your size

EU / LT75B

UK34B

US34B

FR90B

Underbust, cm73–77

Sister sizes: 70C (UK 32C), 80A (UK 36A)

Brand charts can differ by up to half a size.

How to measure

Underbust right under the breasts, tape firm and level. Bust around the fullest part wearing an unpadded bra, without pulling.

My size cardJURGITA

Enter measurements in the converter ("From measurements") and all your sizes collect here. The data stays in this browser.

Chart

Bra size calculator and chart

Underbust, cm	A+12	B+14	C+16	D+18	E+20	F+22	G+24
63–67	30AEU 65A	30BEU 65B	30CEU 65C	30DEU 65D	30DDEU 65E	30EEU 65F	30FEU 65G
68–72	32AEU 70A	32BEU 70B	32CEU 70C	32DEU 70D	32DDEU 70E	32EEU 70F	32FEU 70G
73–77	34AEU 75A	34BEU 75B	34CEU 75C	34DEU 75D	34DDEU 75E	34EEU 75F	34FEU 75G
78–82	36AEU 80A	36BEU 80B	36CEU 80C	36DEU 80D	36DDEU 80E	36EEU 80F	36FEU 80G
83–87	38AEU 85A	38BEU 85B	38CEU 85C	38DEU 85D	38DDEU 85E	38EEU 85F	38FEU 85G
88–92	40AEU 90A	40BEU 90B	40CEU 90C	40DEU 90D	40DDEU 90E	40EEU 90F	40FEU 90G
93–97	42AEU 95A	42BEU 95B	42CEU 95C	42DEU 95D	42DDEU 95E	42EEU 95F	42FEU 95G
98–102	44AEU 100A	44BEU 100B	44CEU 100C	44DEU 100D	44DDEU 100E	44EEU 100F	44FEU 100G

Questions and answers

Underbust right under the breasts, tape firm and level. Bust around the fullest part wearing an unpadded bra, without pulling.

01How do I calculate my bra size?

The band is your underbust rounded to 5 cm (70, 75, 80…). The cup comes from the difference: 12–14 cm A, 14–16 cm B, 16–18 cm C and so on.

02What are sister sizes?

Sizes with the same cup volume: a smaller band with a bigger cup or the reverse, e.g. 34B = 32C = 36A.

Charts