French and Spanish bra bands run 15 higher than the EU number — a US 34 band (EU 75) is an FR/ES 90. Cup letters in FR/ES follow the EU scale, matching the US only through D.
France and Spain use the same band numbering as each other, and it's a simple offset from the EU: add 15 to the EU centimeter band. Since a US 34 band is already an EU 75, that makes it an FR/ES 90 — and a US 38 (EU 85) becomes FR/ES 100.
Cup letters in the FR/ES system follow the EU sequence (E, F, G…) rather than the US one (DD, DDD, G…), so the same cup-divergence rules apply: a US DD is an FR/ES E, a US DDD is an FR/ES F. Through D, all three systems — US, EU, and FR/ES — use the identical letter.
| Band (US) | Band (FR/ES) |
|---|---|
| 28 | 75 |
| 30 | 80 |
| 32 | 85 |
| 34 | 90 |
| 36 | 95 |
| 38 | 100 |
| 40 | 105 |
| 42 | 110 |
| 44 | 115 |
| Cup (US) | Cup (FR/ES) |
|---|---|
| AA | AA |
| A | A |
| B | B |
| C | C |
| D | D |
| DD / E | E |
| DDD / F | F |
| G / DDDD | G |
| H | H |
| I | I |
| J | J |
| K | K |
Cup letters match through D; above D the systems diverge, which is why the cup half of this chart is a lookup, never a formula.
A US 34B is an FR/ES 90B — band 34 (EU 75) plus 15 gives 90, and B is identical across US, EU, and FR/ES.
French and Spanish bands are centimeter-based like the EU, then offset by +15 — so they’re not a different physical size, just a different number for the same band.
FR/ES cup letters follow the EU sequence (E, F, G…), so a US DD or DDD converts the same way to French as it does to EU: DD→E, DDD→F.