The complete EU to US ring size conversion guide 2026 — European Continental ring sizes use a numeric system based on finger circumference in millimetres. Full EU to US chart (EU 37–EU 72), EU to UK and CA conversion, mm diameter and circumference reference, women's and men's averages, and free conversion calculator
European (ISO/DIN standard) ring sizes are based directly on the inner circumference of the ring in millimetres. EU size 52 means the ring has an inner circumference of approximately 52mm. The US ring sizing system uses a numeric scale from 1 to 13.5 in half-size increments — and these US numbers have no direct mathematical relationship to mm measurements, which is why a conversion chart is required.
To convert an EU ring size to a US ring size — find your EU number in the chart below and read the corresponding US numeric size in the same row. The most common women's conversion is EU 52 = US 6.5. The most common men's conversion is EU 61 = US 9.5. Canadian ring sizes are identical to US sizes — so the same EU to US conversion applies directly for EU to CA as well. Use the free calculator below for any EU to US instant result.
EU ring sizes are based on the exact circumference of the finger in millimetres — a logical, measurement-based system. US ring sizes are an arbitrary numeric scale with no direct formula linking them to mm values. This means you cannot calculate an EU to US conversion mathematically — you must use the reference chart. The good news: the chart is simple, and the most important conversions (EU 52 = US 6.5 for women, EU 61 = US 9.5 for men) are easy to remember. Canadian ring sizes are identical to US sizes — EU to CA uses the exact same chart.
🇨🇦 CA 6.5 | 🇬🇧 UK N | 🇦🇺 AU N
Circumference: 53.8mm
Diameter: 17.1mm
Ring finger, left hand
🇨🇦 CA 9.5 | 🇬🇧 UK T | 🇦🇺 AU T
Circumference: 61.4mm
Diameter: 19.56mm
Ring finger, left hand
🇬🇧 UK L–P | 51.2–56.3mm
Diameter: 16.3–17.9mm
Most common EU women's range
🇬🇧 UK R–V | 58.9–64.0mm
Diameter: 18.6–20.37mm
Most common EU men's range
| 🇪🇺 EU Size | 🇺🇸 US / 🇨🇦 CA | Circ. (mm) | 🇬🇧 UK / 🇦🇺 AU | Typical Wearer |
|---|---|---|---|---|
| 37 | — | 37.8 | A | Children / XS |
| 38 | 1 | 39.1 | B | Children / XS |
| 40 | 1.5 | 40.4 | C | XS Women |
| 41 | 2 | 41.7 | D | Small Women |
| 42 | 2.5 | 42.9 | E | Small Women |
| 43 | 3 | 44.2 | F | Small Women |
| 45 | 3.5 | 45.5 | G | Women |
| 46 | 4 | 46.8 | H | Women |
| 47 | 4.5 | 48.0 | I | Women |
| 48 | 4.75 | 48.7 | J | Women |
| 49 | 5 | 50.0 | K | Women |
| 50 | 5.5 | 51.2 | L | Women |
| 51 | 6 | 52.5 | M | Women |
| 52 ⭐ | 6.5 ⭐ | 53.8 | N | Women's Average ⭐ |
| 54 ⭐ | 7 ⭐ | 55.1 | O | Women Popular |
| 55 ⭐ | 7.5 ⭐ | 56.3 | P | Women Popular |
| 57 | 8 | 57.6 | Q | Slim Men |
| 58 | 8.5 | 58.9 | R | Lean Men |
| 60 | 9 | 60.2 | S | Avg Slim Men |
| 61 ⭐ | 9.5 ⭐ | 61.4 | T | Men's Average ⭐ |
| 63 ⭐ | 10 ⭐ | 62.7 | U | Men Popular |
| 64 ⭐ | 10.5 ⭐ | 64.0 | V | Men Popular |
| 65 | 11 | 65.3 | W | Athletic Men |
| 67 | 11.5 | 66.6 | X | Broad Men |
| 68 | 12 | 67.8 | Y | Large Build |
| 69 | 12.5 | 68.5 | Z | XL Build |
| 70 | 13 | 69.7 | Z+1 | XL Custom |
| 72 | 13.5 | 72.3 | Z+2 | Custom |
The EU size scale does not run in perfectly consecutive integers — for example it goes EU 51 → EU 52 → EU 54 (skipping EU 53). This is because the EU system is based on exact inner circumference in mm, and not every integer millimetre value aligns to a standard US half-size increment. The sizes listed in the chart are the standard EU sizes that correspond to defined US half-sizes. If you have a ring labelled EU 53 or EU 56 — use the nearest listed EU size, rounding up (choosing the larger US size) when in doubt.
| 🇪🇺 EU Size | 🇺🇸 US / 🇨🇦 CA | 🇬🇧 UK / 🇦🇺 AU | Circ. (mm) | Diam. (mm) | Circ. (cm) | Circ. (inches) | Best For |
|---|---|---|---|---|---|---|---|
| 37 | — | A | 37.8 mm | 11.9 mm | 3.78 cm | 1.488″ | Children / XS |
| 38 | 1 | B | 39.1 mm | 12.3 mm | 3.91 cm | 1.539″ | Children / XS |
| 40 | 1.5 | C | 40.4 mm | 12.7 mm | 4.04 cm | 1.590″ | XS Women |
| 41 | 2 | D | 41.7 mm | 13.1 mm | 4.17 cm | 1.642″ | Small Women |
| 42 | 2.5 | E | 42.9 mm | 13.5 mm | 4.29 cm | 1.689″ | Small Women |
| 43 | 3 | F | 44.2 mm | 13.9 mm | 4.42 cm | 1.740″ | Small Women |
| 45 | 3.5 | G | 45.5 mm | 14.3 mm | 4.55 cm | 1.791″ | Women |
| 46 | 4 | H | 46.8 mm | 14.7 mm | 4.68 cm | 1.843″ | Women |
| 47 | 4.5 | I | 48.0 mm | 15.1 mm | 4.80 cm | 1.890″ | Women |
| 48 | 4.75 | J | 48.7 mm | 15.5 mm | 4.87 cm | 1.917″ | Women |
| 49 | 5 | K | 50.0 mm | 15.9 mm | 5.00 cm | 1.969″ | Women |
| 50 | 5.5 | L | 51.2 mm | 16.3 mm | 5.12 cm | 2.016″ | Women |
| 51 | 6 | M | 52.5 mm | 16.7 mm | 5.25 cm | 2.067″ | Women |
| 52 ⭐ | 6.5 ⭐ | N ⭐ | 53.8 mm | 17.1 mm | 5.38 cm | 2.118″ | Women's Avg ⭐ |
| 54 ⭐ | 7 ⭐ | O ⭐ | 55.1 mm | 17.5 mm | 5.51 cm | 2.169″ | Women Popular |
| 55 ⭐ | 7.5 ⭐ | P ⭐ | 56.3 mm | 17.9 mm | 5.63 cm | 2.217″ | Women Popular |
| 57 | 8 | Q | 57.6 mm | 18.2 mm | 5.76 cm | 2.268″ | Slim Men |
| 58 | 8.5 | R | 58.9 mm | 18.6 mm | 5.89 cm | 2.319″ | Lean Men |
| 60 | 9 | S | 60.2 mm | 19.1 mm | 6.02 cm | 2.370″ | Avg Slim Men |
| 61 ⭐ | 9.5 ⭐ | T ⭐ | 61.4 mm | 19.56 mm | 6.14 cm | 2.417″ | Men's Avg ⭐ |
| 63 ⭐ | 10 ⭐ | U ⭐ | 62.7 mm | 19.96 mm | 6.27 cm | 2.469″ | Men Popular |
| 64 ⭐ | 10.5 ⭐ | V ⭐ | 64.0 mm | 20.37 mm | 6.40 cm | 2.520″ | Men Popular |
| 65 | 11 | W | 65.3 mm | 20.78 mm | 6.53 cm | 2.571″ | Athletic Men |
| 67 | 11.5 | X | 66.6 mm | 21.18 mm | 6.66 cm | 2.622″ | Broad Men |
| 68 | 12 | Y | 67.8 mm | 21.59 mm | 6.78 cm | 2.669″ | Large Build |
| 69 | 12.5 | Z | 68.5 mm | 21.79 mm | 6.85 cm | 2.697″ | XL Build |
| 70 | 13 | Z+1 | 69.7 mm | 22.20 mm | 6.97 cm | 2.744″ | XL Custom |
| 72 | 13.5 | Z+2 | 72.3 mm | 23.01 mm | 7.23 cm | 2.846″ | Custom |
Canadian ring sizes are identical to US ring sizes — CA size 6.5 = US size 6.5 = EU 52. When converting a European ring size to a Canadian size, use exactly the same chart and calculator as the EU to US conversion above. The result is your CA size directly. No additional conversion step is needed.
Many Etsy sellers based in Europe (Germany, France, Italy, Scandinavia, Poland) list their rings in EU sizes. When ordering from these sellers for US or Canadian delivery — use the quick reference chart above to find your EU equivalent before placing your order. Simply find your US size in the US/CA column and read the EU size in the same row.
Common US women's sizes and EU equivalents: US 5.5 = EU 50 · US 6 = EU 51 · US 6.5 = EU 52 · US 7 = EU 54 · US 7.5 = EU 55
Common US men's sizes and EU equivalents: US 8.5 = EU 58 · US 9 = EU 60 · US 9.5 = EU 61 · US 10 = EU 63 · US 10.5 = EU 64
Always message the Etsy seller if you are unsure — most European jewellers are familiar with US to EU size requests and will confirm the correct EU size based on your US size or mm measurement.
Pandora lists rings in EU sizes in its European stores and on pandora.net. The most popular Pandora ring sizes for women correspond to EU 52 (US 6.5), EU 54 (US 7) and EU 56 (between US 7.5 and US 8 — select US 8). Pandora's standard ring range runs from EU 48 to EU 60. In US Pandora stores, sizing is offered in US numeric sizes — US staff can convert to EU on request for cross-border purchases. When ordering from pandora.net's European store for US delivery — use your US size from the chart above to select the correct EU size at checkout.
If your EU size falls between two standard entries in the chart (e.g. EU 53, which falls between EU 52 and EU 54) — always choose the larger US size. EU 53 falls between US 6.5 (EU 52) and US 7 (EU 54) — select US 7. A slightly large ring is more comfortable and easier to resize than one that is too tight. Most US and Canadian jewellers offer free resizing within 30–60 days — use this as your safety net when ordering online.
Each 0.5 increment in the US ring size system corresponds to approximately 1.25–1.3mm increase in finger circumference. This means each US half-size step moves up by roughly 1.25mm in the EU / mm system. Example: US 6 = EU 51 (52.5mm) → US 6.5 = EU 52 (53.8mm) → US 7 = EU 54 (55.1mm). This pattern is consistent across the full size range and can help you estimate the nearest EU size when your US size is known.