Like any clothing, different lingerie brands produce bras and bottoms in different sizes, despite them being advertised as a certain size. Some are accurate according to measurements, others are a little more generous (or less generous).

This can be so confusing and means that people are increasingly ordering multiple sizes of bras to try and find the right fit. Unfortunately, this is having a negative impact on the environment, because brands often don’t resell returns – they’ll just ship them off to landfill, which is terrible for the environment.

So we’ve created this handy conversion guide so you can measure your bust using the Confident Tiger Measuring Tape and work out which size you are (as close to possible) to the brands we promote on our site.

If you’re not sure which size you are, you can book a Zoom fitting with our fit by sight experts at Coco-Boo Lingerie.`

Please note: different styles by the same brand also differ between sizes and this conversion chart is not definitive. It exists as a guide to help you choose the right size, based on extensive research from multiple sources.

Brand Size Conversion Chart

Confident Tiger
(True to bra calculator measurement)
Panache
True to size except Tango Balconette – size down 2 cups)
Freya
Size down one cup and band size, except Matilda – size down by 2 cups
Curvy Kate
Inconsistent between styles, but generally size down one band size and size up a cup size.
Elomi
Size down one band size and at least one cup size, except Matilda – size down 2 cup sizes G+
28C28C26B26D26B
28D28D26C26DD26C
28DD28DD26D26E26D
28E28E26DD26F26DD
28F28F26E26FF26E
28FF28FF26F26G26F
28G28G26FF26GG26FF
28GG28GG26G26H26G
28H28H26GG26HH26GG
28HH28HH26H26J26H
28J28J26HH26JJ26HH
28JJ28JJ26J26K26J
28K28K26JJ26KK26JJ
28KK28KK26K26L26K
28L28L26KK26LL26KK
30C30C28B28D28B
30D30D28C28DD28C
30DD30DD28D28E28D
30E30E28DD28F28DD
30F30F28E28FF28E
30FF30FF28F28G28F
30G30G28FF28GG28FF
30GG30GG28G28H28G
30H30H28GG28HH28GG
30HH30HH28H28J28H
30J30J28HH28JJ28HH
30JJ30JJ28J28K28J
30K30K28JJ28KK28JJ
30KK30KK28K28L28K
30L30L28KK28LL28KK
32C32C30B30D30B
32D32D30C30DD30C
32DD32DD30D30E30D
32E32E30DD30F30DD
32F32F30E30FF30E
32FF32FF30F30G30F
32G32G30FF30GG30FF
32GG32GG30G30H30G
32H32H30GG30HH30GG
32HH32HH30H30J30H
32J32J30HH30JJ30HH
32JJ32JJ30J30K30J
32K32K30JJ30KK30JJ
32KK32KK30K30L30K
32L32L30KK30LL30KK
34C34C32B32D32B
34D34D32C32DD32C
34DD34DD32D32E32D
34E34E32DD32F32DD
34F34F32E32FF32E
34FF34FF32F32G32F
34G34G32FF32GG32FF
34GG34GG32G32H32G
34H34H32GG32HH32GG
34HH34HH32H32J32H
34J34J32HH32JJ32HH
34JJ34JJ32J32K32J
34K34K32JJ32KK32JJ
34KK34KK32K32L32K
34L34L32KK32LL32KK
36C36C34B34D34B
36D36D34C34DD34C
36DD36DD34D34E34D
36E36E34DD34F34DD
36F36F34E34FF34E
36FF36FF34F34G34F
36G36G34FF34GG34FF
36GG36GG34G34H34G
36H36H34GG34HH34GG
36HH36HH34H34J34H
36J36J34HH34JJ34HH
36JJ36JJ34J34K34J
36K36K34JJ34KK34JJ
36KK36KK34K34L34K
36L36L34KK34LL34KK
38C38C36B36D36B
38D38D36C36DD36C
38DD38DD36D36E36D
38E38E36DD36F36DD
38F38F36E36FF36E
38FF38FF36F36G36F
38G38G36FF36GG36FF
38GG38GG36G36H36G
38H38H36GG36HH36GG
38HH38HH36H36J36H
38J38J36HH36JJ36HH
38JJ38JJ36J36K36J
38K38K36JJ36KK36JJ
38KK38KK36K36L36K
38L38L36KK36LL36KK
40C40C38B38D38B
40D40D38C38DD38C
40DD40DD38D38E38D
40E40E38DD38F38DD
40F40F38E38FF38E
40FF40FF38F38G38F
40G40G38FF38GG38FF
40GG40GG38G38H38G
40H40H38GG38HH38GG
40HH40HH38H38J38H
40J40J38HH38JJ38HH
40JJ40JJ38J38K38J
40K40K38JJ38KK38JJ
40KK40KK38K38L38K
40L40L38KK38LL38KK
42C42C40B40D40B
42D42D40C40DD40C
42DD42DD40D40E40D
42E42E40DD40F40DD
42F42F40E40FF40E
42FF42FF40F40G40F
42G42G40FF40GG40FF
42GG42GG40G40H40G
42H42H40GG40HH40GG
42HH42HH40H40J40H
42J42J40HH40JJ40HH
42JJ42JJ40J40K40J
42K42K40JJ40KK40JJ
42KK42KK40K40L40K
42L42L40KK40LL40KK
44C44C42B42D42B
44D44D42C42DD42C
44DD44DD42D42E42D
44E44E42DD42F42DD
44F44F42E42FF42E
44FF44FF42F42G42F
44G44G42FF42GG42FF
44GG44GG42G42H42G
44H44H42GG42HH42GG
44HH44HH42H42J42H
44J44J42HH42JJ42HH
44JJ44JJ42J42K42J
44K44K42JJ42KK42JJ
44KK44KK42K42L42K
44L44L42KK42LL42KK

Underband Size Conversion Chart

UKUSAEUFRAITAAUS
303065808
32327085110
34347590212
36368095314
383885100416
404090105518
424295110620
4444100115722

Cup Size Conversion Chart

UKUSAEUFRAITAAUS
AAAAAA
BBBBBB
CCCCCC
DDDDDD
DDDD/EEEDDDD
EDDD/FFFEE
FGGGFF
FFHHHFFFF
GIJJGG
GGJKKGGGG
HKLLHH
HHLMMHHHH
JMNNJJ