EU sizes to diameter (mm)
Type a value in EU to get it in ⌀ mm instantly.
17.32⌀ mm
That's 1.05× as big as an average women’s ring, while an average men’s ring is 1.1× bigger. That is about 17.32 mm across the inside.
What it means
How big is that ring?
Measure a ring that fits across its inside, or wrap a strip of paper around the finger. Fingers swell in heat, so measure warm.
The math
How to convert EU to ⌀ mm
To convert EU sizes to diameter (mm), multiply by 0.31831.
Example: 54.4 EU × 0.31831 = 17.3161 ⌀ mm.
In the other direction, 1 ⌀ mm = 3.14159 EU.
Every unit
Your ring size in every system
Tables
EU to ⌀ mm conversion table
| EU | ⌀ mm |
|---|---|
| 44.2 EU | 14.0693 ⌀ mm |
| 46.8 EU | 14.8969 ⌀ mm |
| 49.3 EU | 15.6927 ⌀ mm |
| 51.9 EU | 16.5203 ⌀ mm |
| 54.4 EU | 17.3161 ⌀ mm |
| 57 EU | 18.1437 ⌀ mm |
| 59.5 EU | 18.9394 ⌀ mm |
| 62.1 EU | 19.767 ⌀ mm |
| 64.6 EU | 20.5628 ⌀ mm |
| 67.2 EU | 21.3904 ⌀ mm |
| 69.7 EU | 22.1862 ⌀ mm |
⌀ mm to EU conversion table
| ⌀ mm | EU |
|---|---|
| 14.1 ⌀ mm | 44.2965 EU |
| 14.9 ⌀ mm | 46.8097 EU |
| 15.7 ⌀ mm | 49.323 EU |
| 16.5 ⌀ mm | 51.8363 EU |
| 17.3 ⌀ mm | 54.3496 EU |
| 18.1 ⌀ mm | 56.8628 EU |
| 18.9 ⌀ mm | 59.3761 EU |
| 19.8 ⌀ mm | 62.2035 EU |
| 20.6 ⌀ mm | 64.7168 EU |
| 21.4 ⌀ mm | 67.2301 EU |
| 22.2 ⌀ mm | 69.7434 EU |
Quick answers
Quick answers
- How many ⌀ mm is 1 EU?
- 1 EU is 0.31831 ⌀ mm.
- How many ⌀ mm is 10 EU?
- 10 EU is 3.1831 ⌀ mm.
- How many ⌀ mm is 54.4 EU?
- 54.4 EU is 17.3161 ⌀ mm.
The units
About these units
EU sizes (EU)
The ISO standard, equal to the inner circumference in millimeters.
Diameter (mm) (⌀ mm)
The inside distance across the ring. Circumference divided by π.
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