* Ring size conversion
UK G ring size conversion
UK G is an inside diameter of 14.5 mm (circumference 45.5 mm). In other systems that is US 3.5 = UK G = EU 45 = Japan 6.
Published July 11, 2026
UK G — full conversion
- Inside diameter
- 14.5 mm
- Inside circumference
- 45.5 mm
- Japan
- 6
- US / Canada
- 3.5
- UK / Australia
- G
- EU (ISO)
- 45
Nearby sizes
- Ø 14.1 mm — US 3 = UK F = EU 44 = Japan 4
- Ø 14.9 mm — US 4 = UK H = EU 47 = Japan 7
Buying tips for UK G
- Wide bands feel tighter — consider going up ~½ US size for bands over 6 mm.
- Printable paper sizers are often ¼–½ size off; prefer a metal gauge at a jeweler.
- Selling the ring for gold? Check 18K ring melt value or the karat × weight calculator.
* Frequently asked
FAQ
- Q. What is UK G in other ring size systems?
- A. UK G converts to US 3.5 = UK G = EU 45 = Japan 6.
- Q. What is the diameter of UK G?
- A. Inside diameter 14.5 mm; inside circumference 45.5 mm.
- Q. How should I measure my finger?
- A. Measure at the end of the day when fingers are warm. The ring must clear the knuckle; if knuckle and base differ, size for the knuckle and consider a comfort-fit band.
- Q. Can every ring be resized to this size?
- A. Most gold and platinum bands can move 1–2 sizes. Tension settings, eternity bands, and some titanium/tungsten rings cannot. See a jeweler before ordering a resize.
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