Inches chart

Bra Size Chart in Inches

This bra size chart in inches focuses on measurements first: underbust range, bust range, and the matching US and UK labels. It is useful when you have a tape measure result and want to browse the possible rows.

The inch ranges come from the same calculator formula used elsewhere on Wearavo. They are meant to guide your starting size before you compare brands and fit checks.

Last updated: July 9, 2026

Bra size chart in inches

This chart puts underbust and bust ranges first, then shows the US and UK labels connected to those measurements.

Bra size chart in inches with US and UK size labels.
Underbust in	Bust in	US size	UK size	EU	FR	AU
29-31	30.5-31.5	30A	30A	65A	80A	8A
29-31	31.5-32.5	30B	30B	65B	80B	8B
29-31	32.5-33.5	30C	30C	65C	80C	8C
29-31	33.5-34.5	30D	30D	65D	80D	8D
29-31	34.5-35.5	30DD	30DD	65E	80E	8DD
29-31	35.5-36.5	30DDD	30E	65F	80F	8E
31-33	32.5-33.5	32A	32A	70A	85A	10A
31-33	33.5-34.5	32B	32B	70B	85B	10B
31-33	34.5-35.5	32C	32C	70C	85C	10C
31-33	35.5-36.5	32D	32D	70D	85D	10D
31-33	36.5-37.5	32DD	32DD	70E	85E	10DD
31-33	37.5-38.5	32DDD	32E	70F	85F	10E
33-35	34.5-35.5	34A	34A	75A	90A	12A
33-35	35.5-36.5	34B	34B	75B	90B	12B
33-35	36.5-37.5	34C	34C	75C	90C	12C
33-35	37.5-38.5	34D	34D	75D	90D	12D
33-35	38.5-39.5	34DD	34DD	75E	90E	12DD
33-35	39.5-40.5	34DDD	34E	75F	90F	12E
35-37	36.5-37.5	36A	36A	80A	95A	14A
35-37	37.5-38.5	36B	36B	80B	95B	14B
35-37	38.5-39.5	36C	36C	80C	95C	14C
35-37	39.5-40.5	36D	36D	80D	95D	14D
35-37	40.5-41.5	36DD	36DD	80E	95E	14DD
35-37	41.5-42.5	36DDD	36E	80F	95F	14E
37-39	38.5-39.5	38A	38A	85A	100A	16A
37-39	39.5-40.5	38B	38B	85B	100B	16B
37-39	40.5-41.5	38C	38C	85C	100C	16C
37-39	41.5-42.5	38D	38D	85D	100D	16D
37-39	42.5-43.5	38DD	38DD	85E	100E	16DD
37-39	43.5-44.5	38DDD	38E	85F	100F	16E
39-41	40.5-41.5	40A	40A	90A	105A	18A
39-41	41.5-42.5	40B	40B	90B	105B	18B
39-41	42.5-43.5	40C	40C	90C	105C	18C
39-41	43.5-44.5	40D	40D	90D	105D	18D
39-41	44.5-45.5	40DD	40DD	90E	105E	18DD
39-41	45.5-46.5	40DDD	40E	90F	105F	18E

How to use this chart

Measure your underbust snugly in inches, then find the closest underbust range. Measure your bust at the fullest point and compare that number with the bust range on the same row.

If your measurements sit between rows, do not force the chart to pick one answer. Use the calculator and sister-size finder, then check whether the band stays level and the cups sit smoothly.

Ready when you are

Convert a single size instead of browsing every chart row.

Convert a size

Ready when you are

Not sure of your measurements? Use the calculator before choosing a chart row.

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How inches become band and cup

The calculator rounds the underbust toward the nearest supported even band, then estimates cup depth from the difference between bust and band. About one inch of difference moves the result by one cup step in this simplified model.

This is why both measurements matter. A 36 inch bust can point to different cups depending on whether the band is 30, 32, or 34.

Brand sizing still matters

A chart gives you a standard reference, but bras are products with shape, stretch, wire width, cup depth, and construction choices. Two bras with the same printed label can feel different if one brand uses firm elastic and another uses a stretchier band.

Use this page to identify the closest label, then check the retailer's chart and the real fit. If the cup volume feels close but the band feels wrong, compare sister sizes before jumping to an unrelated cup letter.

More charts

International chart US UK EU French Australian

Related size hubs

30A 30B 30C 30D 30DD 30DDD 32A 32B

Unusual sizes and sport bras

What if my size is outside this chart?

The active Wearavo dataset covers common reference sizes. If your measurements fall outside this range, use the same measurement principles and compare specialist brand charts that carry extended bands or cups.

Should sport bras use the same chart?

Sport bras often use firmer fabrics, compression, or alpha sizing. Start with your chart size, then check the sport bra's own support level, cup structure, and band guidance.

FAQ

How do I calculate bra size from inches?

Measure underbust for the band, then measure the fullest bust point. The difference between bust and band gives the starting cup step.

What if my underbust is between two bands?

Use the calculator for a starting result, then compare sister sizes. The better band is the one that stays level and feels secure without painful pressure.

Is one inch always one cup size?

It is a useful simplified rule for a starting estimate. Real fit can shift because of brand grading, cup shape, and fabric.

Should I use inches or centimetres?

Use whichever unit you can measure accurately. The calculator can accept inches or centimetres, and the chart also shows centimetre ranges on country pages.