Bra size chart: find your US size in inches, then any country's label

Q: How do I read a bra size chart?

Use the worked grid only when your underbust matches its row exactly. For other readings, enter both unrounded measurements in the calculator; its cup result accounts for band rounding. Sizes vary by brand, so check the brand's own chart before you buy.

Q: What does the number in a bra size mean, for example 36?

The number is the reference band label. In our model, underbust readings from 35 in up to, but not including, 37 in round to 36. This is not a universal brand fit range. A 36B and a 36DD share the band label and differ by three reference cup steps.

Q: How do sports bra sizes (S, M, L) compare to bra sizes?

Each brand maps its letter sizes to a range of band and cup sizes on its own chart, and the ranges differ between brands. On Nike's chart (opened 8 October 2026), S covers 32C to 32E and 34A to 34C, and M covers 34D to 34E and 36A to 36C. Use your measured bra size to find the letter on that brand's chart.

Q: How do I convert a US bra size to a UK bra size?

The band is the same number. The cups are the same letters up to DD; after that the UK goes E, F, FF, G, GG, H and the US goes DDD, G, H, I, J, K. So a US 34DDD is a UK 34E and a US 34G is a UK 34F. Some US brands print E for DD and F for DDD, so read the brand's own chart.

Q: How do I convert a UK bra size to an Australian size?

Subtract 22 from the band: a UK 34 is an AU 12. The cups match up to F. After F the sources we read disagree, so use the brand's own Australian label for a UK FF or larger; the table above shows who says what.

Q: Why do two bra conversion charts show different letters?

Cup letters after DD are not standardised. Brands differ on the Australian letters after F, on the Japanese letters above DD, and on whether E and F mean DD and DDD in the US. The checks above list where each chart we opened agrees with ours and where it does not.

Q: Can I print this chart?

Yes. Use the print button to print the band and cup tables, or save the chart image (PNG or SVG). The image carries the same numbers as the text tables.

Your band is your snug underbust rounded to the nearest even inch. Your cup is how many inches your bust measures above that band: 1 inch is A, 2 is B, 3 is C, 4 is D, 5 is DD and 6 is DDD on US labels. The chart below does that lookup for bands 28 to 46, in inches with centimeters one tap away, and then reads the same size in the UK, EU, France, Australia and Japan. Sizes vary by brand, so treat it as your starting size and check each brand's chart. Have a tag from another country? An EU 105D is a UK 46D, while a French 105D is a UK 40D; the "Read any label" tables below cover EU, French, Australian and Japanese tags.

Calculate my size Convert my size Save chart image

By Rai Ansar · Sizes computed by the Bra Atlas engine · Sources and checked dates · How the sizes are calculated

US bra size chart in inches

These worked rows assume your underbust is exactly the printed band number. The cells show example bust readings for each US cup. For an odd or fractional underbust, use the calculator with the unrounded measurements; rounding the band first can change the cup result.

Measure the band snug, level and on the exhale; measure the bust at its fullest without pulling the tape. How to measure, step by step.

**Bust measurement (inches) by band and US cup**Worked examples from the measured-band engine, with underbust equal to the row number. AA uses a bust 0.2 in above that number, not an equal bust and underbust. Each displayed pair is checked at build time.
Band (underbust)	AA	A	B	C	D	DD	DDD	G	H
28 (28 in underbust)	28.2	29	30	31	32	33	34	35	36
30 (30 in underbust)	30.2	31	32	33	34	35	36	37	38
32 (32 in underbust)	32.2	33	34	35	36	37	38	39	40
34 (34 in underbust)	34.2	35	36	37	38	39	40	41	42
36 (36 in underbust)	36.2	37	38	39	40	41	42	43	44
38 (38 in underbust)	38.2	39	40	41	42	43	44	45	46
40 (40 in underbust)	40.2	41	42	43	44	45	46	47	48
42 (42 in underbust)	42.2	43	44	45	46	47	48	49	50
44 (44 in underbust)	44.2	45	46	47	48	49	50	51	52
46 (46 in underbust)	46.2	47	48	49	50	51	52	53	54

Show the same chart in centimeters

**Bust measurement (cm) by band and US cup**The same worked pairs converted at 2.54 cm per inch, shown to two decimal places.
Band (underbust cm)	AA	A	B	C	D	DD	DDD	G	H
28 (71.12 cm underbust)	71.63	73.66	76.20	78.74	81.28	83.82	86.36	88.90	91.44
30 (76.20 cm underbust)	76.71	78.74	81.28	83.82	86.36	88.90	91.44	93.98	96.52
32 (81.28 cm underbust)	81.79	83.82	86.36	88.90	91.44	93.98	96.52	99.06	101.60
34 (86.36 cm underbust)	86.87	88.90	91.44	93.98	96.52	99.06	101.60	104.14	106.68
36 (91.44 cm underbust)	91.95	93.98	96.52	99.06	101.60	104.14	106.68	109.22	111.76
38 (96.52 cm underbust)	97.03	99.06	101.60	104.14	106.68	109.22	111.76	114.30	116.84
40 (101.60 cm underbust)	102.11	104.14	106.68	109.22	111.76	114.30	116.84	119.38	121.92
42 (106.68 cm underbust)	107.19	109.22	111.76	114.30	116.84	119.38	121.92	124.46	127.00
44 (111.76 cm underbust)	112.27	114.30	116.84	119.38	121.92	124.46	127.00	129.54	132.08
46 (116.84 cm underbust)	117.35	119.38	121.92	124.46	127.00	129.54	132.08	134.62	137.16

Each cell is a worked bust reading for that cup when the underbust is exactly the band number, so you can see the one-inch step behind every letter. If your underbust is an inch under the band (say 33 in for a 34 band), every cup comes half an inch sooner; the calculator does that arithmetic for you. Older charts that add 4 inches to the band give a different, larger band; the calculator shows both methods side by side.

What the number in a bra size means

The number is the band only. In our model a 36 band covers a snug underbust from 35 inches up to, but not including, 37 inches (88.9 to 94 cm); the letter after it is a separate measurement.

Two people who both wear a 36 band can be a 36A and a 36DD: the band is the same, and the bust differs by four inches. That is why a band number on its own, or a sports bra sold by band, only tells you half the size.

Country band numbers are printed labels, not your measured circumference. In our reference, UK 36 pairs with EU and JP 80, France 95 and AU 14. Brand measurement rules can differ. The band table below covers reference bands 28 to 48.

Bra size chart image

One sheet with the band and cup conversions, made from the same engine as every table on this page. Save it, print it, or use the text tables below: they carry the same numbers and work with a screen reader.

PNG (1600 px) · SVG (vector, prints crisp at any size)

Free to reuse, in print or online, under CC BY 4.0: credit “Bra Atlas (braatlas.com)” and link to this page.

Bands

Your band comes from the snug underbust, rounded to the nearest even inch. Every country's band number follows from it.

**Band conversions**Country band numbers are labels, not your raw underbust in centimeters. EU/JP labels rise 5 per UK band step; France adds 15 to the EU label and AU/NZ subtracts 22 from the UK label. The measurement intervals here describe our band-rounding model, with the upper bound excluded; brand methods can differ.
UK / US	Underbust (in)	Underbust (cm)	EU	France	AU / NZ	Japan
28	27 to <29	68.58 to <73.66	60	75	6	60
30	29 to <31	73.66 to <78.74	65	80	8	65
32	31 to <33	78.74 to <83.82	70	85	10	70
34	33 to <35	83.82 to <88.90	75	90	12	75
36	35 to <37	88.90 to <93.98	80	95	14	80
38	37 to <39	93.98 to <99.06	85	100	16	85
40	39 to <41	99.06 to <104.14	90	105	18	90
42	41 to <43	104.14 to <109.22	95	110	20	95
44	43 to <45	109.22 to <114.30	100	115	22	100
46	45 to <47	114.30 to <119.38	105	120	24	105
48	47 to <49	119.38 to <124.46	110	125	26	110

Cups

These are reference cup positions in our model, not universal tape-measure intervals. Actual readings also need the band-rounding adjustment. The label equivalents can differ between brands.

**Cup letters by country**Rows where the UK and US letters differ are marked. Japan is approximate (see below). "n/a" means outside our table, not a country’s largest possible size.
Cup step	Model cm	UK	US	EU / FR	AU / NZ	Japan
0	0.0	AA	AA	AA	AA	A
1	2.5	A	A	A	A	B
2	5.1	B	B	B	B	C
3	7.6	C	C	C	C	D
4	10.2	D	D	D	D	E
5	12.7	DD	DD	E	DD	F
6	15.2	E	DDD	F	E	G
7	17.8	F	G	G	F	H
8	20.3	FF	H	H	G	I
9	22.9	G	I	I	H	n/a
10	25.4	GG	J	J	HH	n/a
11	27.9	H	K	K	n/a	n/a
12	30.5	HH	L	L	n/a	n/a
13	33.0	J	M	M	n/a	n/a
14	35.6	JJ	N	N	n/a	n/a
15	38.1	K	O	O	n/a	n/a

Common sizes, converted

Sixteen common sizes, each on all six labels. For any other size use the converter.

**Size by size**Generated by the Bra Atlas engine; "n/a" means outside our conversion table; brand charts may go further.
UK	US	EU	FR	AU	JP
32B	32B	70B	85B	10B	C70
34B	34B	75B	90B	12B	C75
32C	32C	70C	85C	10C	D70
34C	34C	75C	90C	12C	D75
36C	36C	80C	95C	14C	D80
38C	38C	85C	100C	16C	D85
30D	30D	65D	80D	8D	E65
34D	34D	75D	90D	12D	E75
38D	38D	85D	100D	16D	E85
40D	40D	90D	105D	18D	E90
32DD	32DD	70E	85E	10DD	F70
34DD	34DD	75E	90E	12DD	F75
36DD	36DD	80E	95E	14DD	F80
34E	34DDD	75F	90F	12E	G75
32F	32G	70G	85G	10F	H70
34FF	34H	75H	90H	12G	I75

Convert from your country's label

Seven sizes, each written as one country prints it and read on all six labels. For any other size use the converter.

**Read a size from any country**Generated by the Bra Atlas engine; the first column is the label as written on the tag.
On the tag	UK	US	EU	FR	AU	JP
US 34G	34F	34G	75G	90G	12F	H75
US 36DDD	36E	36DDD	80F	95F	14E	G80
EU 75E	34DD	34DD	75E	90E	12DD	F75
FR 90C	34C	34C	75C	90C	12C	D75
AU 12DD	34DD	34DD	75E	90E	12DD	F75
JP D75	34C	34C	75C	90C	12C	D75
UK 38FF	38FF	38H	85H	100H	16G	I85

Read any label: EU, French, Australian and Japanese tags in UK and US sizes

Each table is one country's own labels read back to the UK size and, where it differs, the US size. Bands convert exactly; cup letters follow the ladders on this page, so the Australian table uses Berlei's letters and the Japanese one is approximate.

EU and French bra sizes in UK and US (75E, 90C, 105D)

**EU and French labels**French bands are the EU band plus 15; the cup letters are shared. UK size, then US where it differs.
EU / FR band	A	B	C	D	E	F	G
60 / 75	28A	28B	28C	28D	28DD	28E / 28DDD	28F / 28G
65 / 80	30A	30B	30C	30D	30DD	30E / 30DDD	30F / 30G
70 / 85	32A	32B	32C	32D	32DD	32E / 32DDD	32F / 32G
75 / 90	34A	34B	34C	34D	34DD	34E / 34DDD	34F / 34G
80 / 95	36A	36B	36C	36D	36DD	36E / 36DDD	36F / 36G
85 / 100	38A	38B	38C	38D	38DD	38E / 38DDD	38F / 38G
90 / 105	40A	40B	40C	40D	40DD	40E / 40DDD	40F / 40G
95 / 110	42A	42B	42C	42D	42DD	42E / 42DDD	42F / 42G
100 / 115	44A	44B	44C	44D	44DD	44E / 44DDD	44F / 44G
105 / 120	46A	46B	46C	46D	46DD	46E / 46DDD	46F / 46G
110 / 125	48A	48B	48C	48D	48DD	48E / 48DDD	48F / 48G

Australian bra size chart in UK and US sizes

**Australian and New Zealand labels**Bands are the UK band minus 22; letters follow Berlei to H. UK size, then US where it differs.
AU band	A	B	C	D	DD	E	F	G	H
6	28A	28B	28C	28D	28DD	28E / 28DDD	28F / 28G	28FF / 28H	28G / 28I
8	30A	30B	30C	30D	30DD	30E / 30DDD	30F / 30G	30FF / 30H	30G / 30I
10	32A	32B	32C	32D	32DD	32E / 32DDD	32F / 32G	32FF / 32H	32G / 32I
12	34A	34B	34C	34D	34DD	34E / 34DDD	34F / 34G	34FF / 34H	34G / 34I
14	36A	36B	36C	36D	36DD	36E / 36DDD	36F / 36G	36FF / 36H	36G / 36I
16	38A	38B	38C	38D	38DD	38E / 38DDD	38F / 38G	38FF / 38H	38G / 38I
18	40A	40B	40C	40D	40DD	40E / 40DDD	40F / 40G	40FF / 40H	40G / 40I
20	42A	42B	42C	42D	42DD	42E / 42DDD	42F / 42G	42FF / 42H	42G / 42I
22	44A	44B	44C	44D	44DD	44E / 44DDD	44F / 44G	44FF / 44H	44G / 44I
24	46A	46B	46C	46D	46DD	46E / 46DDD	46F / 46G	46FF / 46H	46G / 46I

Japanese bra size chart in UK and US sizes

**Japanese labels (approximate)**The cup letter comes first on a Japanese tag (D75). Cups run a letter ahead of the EU column and step by 2.5 cm, so treat these as a starting point.
JP band	A	B	C	D	E	F	G	H	I
65	30AA	30A	30B	30C	30D	30DD	30E / 30DDD	30F / 30G	30FF / 30H
70	32AA	32A	32B	32C	32D	32DD	32E / 32DDD	32F / 32G	32FF / 32H
75	34AA	34A	34B	34C	34D	34DD	34E / 34DDD	34F / 34G	34FF / 34H
80	36AA	36A	36B	36C	36D	36DD	36E / 36DDD	36F / 36G	36FF / 36H
85	38AA	38A	38B	38C	38D	38DD	38E / 38DDD	38F / 38G	38FF / 38H
90	40AA	40A	40B	40C	40D	40DD	40E / 40DDD	40F / 40G	40FF / 40H
95	42AA	42A	42B	42C	42D	42DD	42E / 42DDD	42F / 42G	42FF / 42H
100	44AA	44A	44B	44C	44D	44DD	44E / 44DDD	44F / 44G	44FF / 44H

Where EU conversions disagree

We ran the same 10 tape measurements through two calculators on 25 September 2026. They agree on the EU band every time and disagree on the EU cup 8 times out of 10.

**EU size from the same tape**A Bra That Fits relabels the UK size; calculator.net prints an "EU (EN 13402)" row.
Underbust	Bust	Bra Atlas	A Bra That Fits	calculator.net
28 in	30 in	60B	60B	60B
30 in	34 in	65D	65D	65E
32 in	35 in	70C	70C	70C
33 in	37 in	75C/D	75C/D	75E
34 in	38 in	75D	75D	75E
36 in	41 in	80E	80E	80F
38 in	44 in	85F	85F	85G
29 in	33 in	65C/D	65C/D	65E
40 in	46 in	90F	90F	90G
42 in	48 in	95F	95F	95G

Our read: calculator.net's EU cup runs one letter above the UK-to-EU label convention from D upward (UK D prints as EU E). The label convention (UK DD = EU E, UK E = EU F) is the one A Bra That Fits and the UK ladders on Wikipedia use, so we follow it. EN 13402 itself grades EU cups in 2 cm steps rather than 2.54 cm (Wikipedia), which is one reason EU and UK letters can drift apart; if an EU brand publishes a centimeter chart, use it.

Australia and New Zealand

The band is the UK band minus 22 (UK 34 is AU 12), which Victoria's Secret, Freya and Elomi all print. The cups match the UK letters up to F. After F, the sources disagree.

**The AU letter for each UK cup**As each source prints it. Our chart follows Berlei through H and A Bra That Fits at HH, skipping FF and GG. Berlei’s chart itself stops at H.
UK cup	Bra Atlas	Freya	Elomi	Marks & Spencer
DD	DD	DD	DD	DD
E	E	E	E	E
F	F	F	F	F
FF	G	FF	FF	no such UK letter
G	H	G	G	FF
GG	HH	GG	GG	G
H	n/a	H	H	GG
HH	n/a	HH	HH	no such UK letter
J	n/a	J	J	H
JJ	n/a	JJ	JJ	no such UK letter
K	n/a	K	K	J

Three answers for a UK G in Australia: G on Freya's and Elomi's charts, which repeat the UK letters, H on Berlei's and ours, and FF on Marks & Spencer's own table. Berlei is an Australian brand and M&S prints an AU column on its size guide, so we do not pick a winner: for a UK FF or larger, go by the brand's own AU label. Up to F, every source agrees. Opened 25 and 29 September 2026 (Berlei Australia, Freya, Elomi and M&S).

How this chart was checked

Every conversion here is the engine's. We compared it, cell by cell, with the printed charts of these brands. The comparison is repeated by a test whenever the code changes.

**Our conversions against brand charts**Opened 25 and 29 September 2026. "Matches" means every cell we compared is identical.
Source	What we compared	Result
Victoria's Secret, international chart	56 sizes: US labels to UK, France, international (EU) and Australia	Matches in every cell.
Wacoal America, size charts	Its Elomi, Freya and Fantasie cup ladder: US AA to O against UK AA to K, not a Wacoal-brand range	Matches: US DDD is UK E, US G is UK F, up to US O is UK K.
Freya, size chart	Band and cup rows in UK, EU, France, US and Japan, plus Australia	UK, EU, France, US and Japan match (our Japanese ladder stops at I). Its Australian row repeats the UK letters, FF and GG included.
Elomi, size guide	Band rows 32 to 48 and cup rows in UK, EU, France, US, Japan and Australia	Bands match; cups match in UK, EU, France, US and Japan up to our chart's limit (its chart continues to UK KK). Its Australian row repeats the UK letters.
Marks & Spencer, US size guide	Its UK, Australian, US, EU and France rows	EU and France rows match except 2 cells (40E and 40K), where its own EU row repeats a letter. Its US column is one letter lower than ours on bands 30 and 34 to 46, and its Australian column pairs UK G with AU FF.
Berlei Australia, size charts	Australian cup letters	Our Australian column follows this chart from A to H, with no FF or GG; HH comes from A Bra That Fits, not Berlei.
SKIMS, bra size guide	Cup table	Differs from Wacoal, Freya and Elomi on F: SKIMS pairs its F with UK F where they pair UK F with US G. Its own size grid disagrees with its cup table above DD. For SKIMS, compare your measurements with its grid and check the fit rather than rely on this conversion.

Sports bra sizes and your bra size

Sports bras sold as S, M or L cover a range of band and cup sizes, and each brand draws those ranges differently. Start from your measured bra size and read it on that brand's chart.

**One brand's mapping: Nike sports bras**As printed on Nike's sports bra size chart, opened 8 October 2026. Its chart continues to 4X.
Nike size	Bra sizes it covers (US)
XXS	28A to 28E
XS	30A to 30E, 32A to 32B
S	32C to 32E, 34A to 34C
M	34D to 34E, 36A to 36C
L	36D to 36E, 38A to 38C
XL	38D to 38E, 40A to 40C
XXL	40D to 40E, 42A to 42C
1X	42D to 42E, 44A to 44C
2X	44D to 44E, 46A to 46C
3X	46D to 46E, 48A to 48C

Sister sizes hold the same cup volume, but they do not always share a letter size. Read through Nike's chart, 32D is S, 34C is S, 36B is M. If your band rides up in one letter size, the next size down on the brand's chart is a different band and cup range, not just a smaller garment. Other brands split the ranges differently, so check each one.

Notes by country

UK: Doubles letters after D: DD, E, F, FF, G, GG, H, HH, J, JJ, K. Most full-bust brands (and A Bra That Fits) work in UK sizes.
US / Canada: D, DD, DDD, then G, H, I, J. Some brands use E for DD and F for DDD, so read the brand chart.
EU: Printed band labels rise 5 for each UK band (UK 32 = EU 70, UK 34 = EU 75). EN 13402 uses body underbust ranges instead: 78 to 82 cm maps to EU 80, not 70. Use the brand’s measurement chart. Cup letters are single: UK DD converts to EU E.
France, Belgium, Spain: EU band + 15 (EU 75 is FR 90), EU cup letters.
Australia / New Zealand: UK band − 22 (UK 34 is AU 12). UK letters to F; Berlei then goes G, H and stops. A Bra That Fits continues to HH. Both skip FF and GG (Berlei).
Japan: Our conversion uses EU band labels. JIS L 4006 measures cups in 2.5 cm steps, starting at AA for a 7.5 cm difference. Our table starts at Japanese A for UK AA and does not convert Japanese AA (OneMall). A Bra That Fits' Japanese output runs a further letter ahead above DD, so treat these as approximate.

Quick answers

How do I read a bra size chart?

Use the worked grid only when your underbust matches its row exactly. For other readings, enter both unrounded measurements in the calculator; its cup result accounts for band rounding. Sizes vary by brand, so check the brand's own chart before you buy.

What does the number in a bra size mean, for example 36?

The number is the reference band label. In our model, underbust readings from 35 in up to, but not including, 37 in round to 36. This is not a universal brand fit range. A 36B and a 36DD share the band label and differ by three reference cup steps.

How do sports bra sizes (S, M, L) compare to bra sizes?

Each brand maps its letter sizes to a range of band and cup sizes on its own chart, and the ranges differ between brands. On Nike's chart (opened 8 October 2026), S covers 32C to 32E and 34A to 34C, and M covers 34D to 34E and 36A to 36C. Use your measured bra size to find the letter on that brand's chart.

How do I convert a US bra size to a UK bra size?

The band is the same number. The cups are the same letters up to DD; after that the UK goes E, F, FF, G, GG, H and the US goes DDD, G, H, I, J, K. So a US 34DDD is a UK 34E and a US 34G is a UK 34F. Some US brands print E for DD and F for DDD, so read the brand's own chart.

How do I convert a UK bra size to an Australian size?

Subtract 22 from the band: a UK 34 is an AU 12. The cups match up to F. After F the sources we read disagree, so use the brand's own Australian label for a UK FF or larger; the table above shows who says what.

Why do two bra conversion charts show different letters?

Cup letters after DD are not standardised. Brands differ on the Australian letters after F, on the Japanese letters above DD, and on whether E and F mean DD and DDD in the US. The checks above list where each chart we opened agrees with ours and where it does not.

Can I print this chart?

Yes. Use the print button to print the band and cup tables, or save the chart image (PNG or SVG). The image carries the same numbers as the text tables.

Use the chart

Bra Atlas · braatlas.com/bra-size-chart/ · sizes generated by the Bra Atlas sizing engine, sources opened 25 September to 8 October 2026.

Sources

Each source was opened and checked on the date shown, or on 25 September 2026. Where sources disagree, the page says so instead of picking one silently.

Wikipedia, "Bra size": UK and US cup ladders, the +4 method, EN 13402 and JIS cup steps
A Bra That Fits calculator (community calculator of r/ABraThatFits): we submitted 18 measurement pairs in 6 systems on 25 September 2026; raw synthetic fixture outputs are linked from the methodology
calculator.net, Bra Size Calculator: 10 measurement pairs run in a browser on 25 September 2026
Berlei Australia, size charts: AU band = underbust row, cups A to H with no FF or GG
OneMall, "Japanese Bra Size Conversion" (11 September 2026): JIS cups in 2.5 cm steps; JP letter about one above the US letter
Victoria's Secret Customer Care, "Size & Fit: International Size Chart (Outside the U.S.)": US sizes sold; bands 30 to 44, cups AA to DDD; US DDD = UK E (opened 25 September 2026)
Wacoal America, "Size Charts": US and UK cup ladders for its Elomi, Freya and Fantasie bras (opened 25 September 2026)
Freya, "International Bra Size Chart & Bra Sizing": band and cup tables in UK, EU, FR, AU/NZ, US and JP (opened 25 September 2026)
Elomi, "International Size Guide": US underband and cup sizing, B to O cups and 32 to 48 bands; UK, EU, FR, AU/NZ, US and JP rows (UK cups to KK, US to P) (opened 29 September 2026)
Marks & Spencer US, "Bras size guide": UK, AU/NZ, US/CA, EU and FR conversion table (opened 25 September 2026)
SKIMS, "Bra Size Guide": underband/overbust grid and US/UK/EU/AU cup table disagree above DD; grid skips DDD (opened 25 September 2026)
Nike, Sports Bra Size Chart: alpha sizes XXS to 4X mapped to US band and cup ranges (opened 8 October 2026)