Spanx Bra Size Chart
Enter your measurements for your exact Spanx size — then convert to UK, EU & AU.
Your Spanx size
Size chart — US · UK · EU · AU
Data verified Apr 2026 · Official size guide · See an error? Report it
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Spanx Size Equivalents
Common Spanx bra sizes converted to UK, EU, and AU — plus the sister sizes to try if the band feels off.
| US | UK | EU | AU | Sister sizes |
|---|---|---|---|---|
| 32C | 32C | 70C | 10C | 30D, 34B |
| 34B | 34B | 75B | 12B | 32C, 36A |
| 34C | 34C | 75C | 12C | 32D, 36B |
| 34D | 34D | 75D | 12D | 32DD, 36C |
| 36C | 36C | 80C | 14C | 34D, 38B |
| 36D | 36D | 80D | 14D | 34DD, 38C |
Need a different size? Use the full Spanx size chart above or the calculator for your exact measurements.
How Spanx Sizing Compares
If you wear a 34C in Spanx, here's your likely size in other popular brands:
| Brand | US Size | UK Size | EU Size | Fit |
|---|---|---|---|---|
| Spanx | 34C | 34C | 75C | runs small |
| Victoria's Secret | 34C | 34C | 75C | true to size |
| Calvin Klein | 34C | 34C | 75C | true to size |
| ThirdLove | 34C | 34C | 75C | true to size |
| Savage x Fenty | 34C | 34C | 75C | true to size |
| Wacoal | 34C | 34C | 75C | true to size |
Sizes shown use standard charts. Actual fit may vary by style — always check the brand's specific size guide.
Spanx Sizing & Fit Guide
Spanx bras tend to run slightly small in the band due to their compression-focused design. Size up in the band if you prefer a less snug fit. Cup sizes are true to size. Their wireless styles are more relaxed than underwire.