Bra Size Calculator Ireland
Ireland shops in UK sizing: inch bands (32, 34, 36…) with UK cup letters — DD, E, F, FF, G and beyond — from Marks & Spencer, Dunnes Stores and Penneys (Primark), with Bravissimo shipping to Ireland too. If you know your UK size, you know your Irish size.
Enter Your Measurements
Sizes on this page are estimates. Sizing varies by brand and style, so always check the brand’s own size chart and try on before you buy. Nothing here is medical advice.
How to measure
You need a soft measuring tape and two minutes. Underbust: wrap the tape directly under your bust, level and snug, breathing out normally. Bust: wrap it around the fullest part, level across your back, without pressing in. Enter both numbers above, in inches or centimetres. The full steps are in the step-by-step measuring guide.
Ireland bra size chart
| UK band | EU band | FR band |
|---|---|---|
| 28 | 70 | 85 |
| 30 | 75 | 90 |
| 32 | 80 | 95 |
| 34 | 85 | 100 |
| 36 | 90 | 105 |
| 38 | 95 | 110 |
Cups run by the difference between your bust and band measurements. One inch of difference is roughly one cup step in US and UK sizing; in centimetre systems the steps are 2.5 cm.
How Ireland sizing works
UK sizing uses inch bands (28–48) with cup letters AA, A, B, C, D, DD, E, F, FF, G, GG. US sizing uses the same band numbers but different letters after DD (DDD, G, H). A UK 34E and a US 34DDD are the same volume — only the letter differs.
A worked example
A 34-inch underbust with a 3-inch difference is an Irish 34C, a US 34C and an EU 85D.
Converting to and from Ireland sizes
When an Irish store lists both systems, match the band number first (it is the same in US and UK), then translate the cup: US DDD = UK E, US G = UK F. For EU labels, convert both parts with the global converter.
Common measuring mistakes
Measuring over a padded bra lifts and compresses, giving a smaller bust reading. Measure without a bra or in a thin, unpadded one. Pulling the tape too tight underestimates the band. Letting the tape droop at the back overestimates the bust. Using an old size without re-measuring — weight, pregnancy, breastfeeding and aging all change the numbers, so re-measure every year or two.
Shopping tips for Ireland
Irish stores sell UK sizing, and the same shop can stock US and EU labels too. Check the label’s system on every item — two bras on the same rack can be labeled in different systems, and the cup letters will not match.
Ireland shops on the British high street: Marks & Spencer, Dunnes Stores and Penneys (Primark) all sell UK sizing in Ireland, and Bravissimo ships its full UK-size range to Irish addresses. A worked example: a US 34DDD is an Irish 34E — the band number never changes between US and UK sizing, only the cup letters above DD. Some Irish listings also show the EU equivalent, so a 34E with 75F beside it is the same bra, not a different size.
One habit covers every system: check the system on the label, convert both the band and the cup, and try the bra on before committing to more than one. Returns are easier than a drawer full of the wrong size.
Frequently Asked Questions
What sizing system does Ireland use?
Ireland shops in UK sizing: inch bands (28–46) with UK cup letters — DD, E, F, FF, G, GG and beyond. An Irish 34E is a UK 34E.
Which shops sell bras in Ireland?
Marks & Spencer, Dunnes Stores and Penneys (Primark) all sell UK sizing in Ireland, and Bravissimo ships its full UK-size range to Irish addresses.
How do I convert my US size to an Irish size?
The band number stays the same; only the cup letters above DD move. A US 34DDD is an Irish 34E, a US 34G is an Irish 34F, and through DD the letters match exactly.
Do Irish shops also sell EU sizes?
Some do — Penneys and other retailers with European supply chains sometimes list the EU equivalent beside the UK size. A UK 34E shown with 75F beside it is the same bra, not a different size.