Bra Size Chart

Each cell shows the full size label and the bust range (in cm or inches) it is designed to fit.

US — Tap a linked size (34B) to open its dedicated page.
Band	Underbust range
30	30–31
32	32–33
34	34–35
36	36–37
38	38–38
40	40–40
42	42–43

UK — Tap a linked size (34B) to open its dedicated page.
Band	Underbust range	A	B	C	D	DD	E
30	30–31	30A31–32	30B32–33	30C33–34	30D34–35	30DD35–36	30E36–37
32	32–33	32A33–34	32B34–35	32C35–36	32D36–37	32DD37–38	32E38–39
34	34–35	34A35–36	34B36–37	34C37–38	34D38–38	34DD38–40	34E40–41
36	36–37	36A37–38	36B38–38	36C38–40	36D40–41	36DD41–42	36E42–43
38	38–38	38A38–40	38B40–40	38C40–42	38D42–42	38DD42–44	38E44–45
40	40–40	40A40–42	40B42–42	40C42–44	40D44–45	40DD45–46	40E46–47
42	42–43	42A43–44	42B44–45	42C45–46	42D46–47	42DD47–48	42E48–49

EU — Tap a linked size (34B) to open its dedicated page.
Band	Underbust range	A	B	C	D	E
65	29–31	65A30–31	65B31–32	65C32–33	65D33–34	65E34–35
70	31–32	70A32–33	70B33–34	70C34–35	70D35–36	70E36–37
75	32–34	75A34–35	75B35–36	75C36–37	75D37–38	75E38–39
80	34–36	80A36–37	80B37–38	80C38–39	80D39–40	80E40–41
85	36–38	85A38–39	85B39–40	85C40–41	85D41–42	85E42–43
90	38–40	90A40–41	90B41–42	90C42–43	90D43–44	90E44–45

FR/ES — Tap a linked size (34B) to open its dedicated page.
Band	Underbust range	A	B	C	D	E
80	29–31	80A30–31	80B31–32	80C32–33	80D33–34	80E34–35
85	31–32	85A32–33	85B33–34	85C34–35	85D35–36	85E36–37
90	32–34	90A34–35	90B35–36	90C36–37	90D37–38	90E38–39
95	34–36	95A36–37	95B37–38	95C38–39	95D39–40	95E40–41
100	36–38	100A38–39	100B39–40	100C40–41	100D41–42	100E42–43
105	38–40	105A40–41	105B41–42	105C42–43	105D43–44	105E44–45

AU/NZ — Tap a linked size (34B) to open its dedicated page.
Band	Underbust range	A	B	C	D	DD	E
8	30–31	8A31–32	8B32–33	8C33–34	8D34–35	8DD35–36	8E36–37
10	32–33	10A33–34	10B34–35	10C35–36	10D36–37	10DD37–38	10E38–39
12	34–35	12A35–36	12B36–37	12C37–38	12D38–38	12DD38–40	12E40–41
14	36–37	14A37–38	14B38–38	14C38–40	14D40–41	14DD41–42	14E42–43
16	38–38	16A38–40	16B40–40	16C40–42	16D42–42	16DD42–44	16E44–45
18	40–40	18A40–42	18B42–42	18C42–44	18D44–45	18DD45–46	18E46–47
20	42–43	20A43–44	20B44–45	20C45–46	20D46–47	20DD47–48	20E48–49

JP — Tap a linked size (34B) to open its dedicated page.
Band	Underbust range	A	B	C	D	E
65	29–31	A6530–31	B6531–32	C6532–33	D6533–34	E6534–35
70	31–32	A7032–33	B7033–34	C7034–35	D7035–36	E7036–37
75	32–34	A7534–35	B7535–36	C7536–37	D7537–38	E7538–39
80	34–36	A8036–37	B8037–38	C8038–39	D8039–40	E8040–41
85	36–38	A8538–39	B8539–40	C8540–41	D8541–42	E8542–43
90	38–40	A9040–41	B9041–42	C9042–43	D9043–44	E9044–45

This bra size chart maps every band against every cup for six sizing systems, in inches or centimetres, with the bust range each size is built to fit. Switch the system tab for the market you are shopping in and the unit toggle for the numbers you think in.

Each cell shows the full label — for example 34C or 75C — plus the bust range it is designed for, so you can read a bra size chart from your own measurements without doing arithmetic. Linked sizes like 34B open a dedicated page with equivalents and sister sizes.

Quick answer

A bra size chart lists band sizes as rows, cup sizes as columns, and each cell as a full bra size with the bust measurement range it fits. Use your underbust to find the row and your bust to find the column. This bra size chart covers US, UK, EU, FR/ES, AU/NZ and JP systems in both inches and centimetres.

sizing systems (US, UK, EU, FR/ES, AU/NZ, JP)

460+

charted sizes with bust ranges

measurements needed (underbust + bust)

The bra size chart, system by system

There is no single global bra size chart because there is no single global labelling convention. US and UK bands are even numbers of inches (30, 32, 34…); EU bands count by fives in centimetres (65, 70, 75…); FR/ES adds 15 to the EU number; AU/NZ uses dress-size bands (8, 10, 12…); JP shares the EU numbering but writes the cup first, as C70.

The cups differ too. The UK ladder runs D, DD, E, F, FF — double letters after D — while the US ladder uses D, DD, DDD and the continental systems use single letters only. This is why a UK 32DD appears as EU 70E on any honest bra size chart: same body, different alphabet.

How to read this bra size chart in inches

Working in inches? Find the row whose underbust range contains your snug underbust measurement, then scan right to the column whose bust range contains your bust measurement. The cell where they meet is your starting label. Keep the chart in inches for US, UK and AU/NZ shopping; switch to cm for continental labels — the values convert without losing your place.

The band column lists the underbust range each band is designed around, roughly one inch either side of the label. The bust range in each cell equals the band centre plus the cup's difference range — that is the number the chart is actually promising. That bust range is what a bra size chart really sells.

Band sizes and what they mean

The band is the number in a size like 34C. It carries about 80–90% of the bra's support, so the bra size chart anchors on it. An inch-based band covers about one inch of underbust either side of its number: a 34 band fits an underbust of roughly 33–35 inches (85–89 cm). A centimetre-based EU 75 band covers roughly 73–78 cm.

If your underbust falls at a boundary, both neighbouring bands can work — the tighter band with a looser cup, or the looser band with a tighter cup. Those alternatives are the sister sizes, and every chart row quietly contains them. The bra size chart simply makes those hidden trades visible.

Cup sizes across the chart

The cup is the letter, and it is always a difference, never an absolute size: cup = bust minus underbust within one system's ladder. One step right in the chart means roughly one more inch (2.5 cm) of difference. The dedicated cup size chart breaks this ladder out per system, and the cup sizes guide explains why the same letter over different bands is not the same volume.

When your measurements sit between two columns, try both cups in the same band. The fit tests in our bra fit guide — spilling, gaping, gore contact — decide the winner, not the chart alone.

Cross-border shopping with the chart

The practical superpower of a bra size chart is conversion. A US 34C is a UK 34C, an EU 75C, a FR/ES 90C, an AU/NZ 12C and a JP C75. Read one row across all six system tabs and you can order from any international site with confidence. Our worked example on the 34B page shows every equivalent with measurement ranges.

Remember that charts translate labels, not brand patterns. A label that fits perfectly in one brand may need a sister size in another — the chart gives you the candidates, your body picks the winner. The bra size chart narrows the field before you ever order.

From chart to fitting room

Bring the chart result to life with the calculator: it resolves your two measurements into all six labels at once and highlights your size in this bra size chart when you return. Then run the fit checklist — level band, anchored gore, smooth cups, comfortable straps — before committing to a drawer full of one size. Chart, calculator, mirror — the bra size chart is step one of three.

Reading the bra size chart like a fitter

Professional fitters read a bra size chart in three moves. Move one: locate the band row from the snug underbust — this anchors everything. Move two: run right along the row to the bust range that contains the fullest measurement; the column header is the cup. Move three: note the two neighbours of that cell, because the bra size chart is telling you your sister sizes for free — one band tighter with one letter larger, one band looser with one letter smaller.

That third move is what most people skip. A bra size chart is not a lookup table that returns one answer; it is a map of a neighbourhood. Your starting cell is the centre, the neighbours are the alternates, and the fit checklist on the bra fit page is the referee — that is how a bra size chart earns its keep.

Frequently asked questions

How do I use a bra size chart?

Find the row whose underbust range matches your underbust measurement, then the column whose bust range matches your bust; the intersecting cell is your starting size. This bra size chart also shows the bust range in every cell so you can read it straight from one number. One row, one column — that is the whole bra size chart method.

Which bra size chart should I use — US, UK or EU?

Use the chart for the market you are buying from. US and UK labels are inch-based and nearly identical except beyond D, where the UK uses double letters. EU, FR/ES and JP labels are centimetre-based; this page shows all six side by side. The right bra size chart is simply the one for your market.

What does the number in a bra size mean?

The number is the band — the part that wraps your ribcage and carries most of the support. In the bra size chart, each band row lists the underbust range it is designed to fit. Band first is the golden rule of any bra size chart.

Bra size chart in inches or cm — which is right?

Both are the same chart in different units. Inches suit US, UK and AU/NZ labels; centimetres suit EU, FR/ES and JP labels. The toggle converts ranges without changing the sizes. Pick one unit and the bra size chart stays consistent throughout.

Why do EU sizes skip the DD cup?

The continental ladders use single letters only, so the volume step that UK calls DD is labelled E in the EU system. It is a naming difference, not a sizing difference.

Can a chart tell me my exact size?

A bra size chart converts measurements into labels accurately, but brand patterning varies. Use the chart for candidates and a fit check for the final decision. Think of a bra size chart as a map, not a verdict.

Where do I find my size in the bra size chart?

Row = your underbust, column = your bust; the cell where they meet is your starting size. Every cell of this bra size chart also prints the bust range it fits, so one measurement is enough to scan a row. The bra size chart rewards two honest measurements with six labels.

How often does the bra size chart change?

The conventions behind the chart are stable; the site updates system data with version tags when standards or consensus move. Your own numbers move faster — re-measure every six to twelve months and re-read the bra size chart. Fresh numbers let the bra size chart place you again.

Sources & standards

Every size on this site is cross-checked against these published standards and chart families before it ships.

2017
ISO 8559-1:2017 — Size designation of clothes — Part 1: Anthropometric definitions for body measurement
Defines the body measurement points (chest/bust girth, underbust girth) this site measures.
2017
EN 13402 (label family) — Size designation of clothes — European size labelling
Basis of the continental EU band ladder (65, 70, 75 …) in 5 cm steps.
2023
JIS L 4006:2023 — Sizing systems for foundation garments
Japanese foundation-garment sizing; the label family behind JP cup-first sizes such as C75.
2019
KS K 9404 — Sizing systems for foundation garments (Korea)
Korean foundation-garment sizing; referenced while the KR system awaits full verification.
2025
Multi-source retail consensus — US, UK, FR/ES and AU/NZ bra size charts (cross-brand average)
Inch-based band rounding, UK double-letter cup ladder, FR/ES +15 offset and AU/NZ dress-size bands.

By Bra Size Calculator · Updated 2026-10-01

Keep exploring

Bra Size Calculator

Compute your size, then come back and find it in the chart.

Cup Size Chart

The cup ladder per system.

Breast Size Chart

Bust-to-cup reference across systems.

34B Bra Size

One chart cell, fully unpacked.

Bra Sizes Explained

What bands and cups really encode.