Ring Size Guide

Size & Fit

Find your perfect fit using the guide below. Sizes are based on US standards, and inner diameter values are approximate.
For the most accurate fit, we recommend measuring your ring or finger before selecting a size.

US UK Japan EU Inner Diameter (mm)
3 F ½ 4 44 14.1
3.5 G ½ - - 14.5
4 H ½ 7 47 14.9
4.5 I ½ 8 48 15.3
5 J ½ 9 49 15.7
5.5 K ½ 10 - 16.1
6 L ½ 11 52 16.5
6.5 M ½ 13 53 16.9
7 N ½ 14 54 17.3
7.5 O ½ 15 - 17.7
8 P ½ 16 57 18.1
8.5 Q ½ 17 58 18.5
9 R ½ 18 - 19.0
9.5 S ½ 19 61 19.4
10 T ½ 20 62 19.8
10.5 U ½ 22 63 20.2
11 V ½ 23 - 20.6
11.5 W ½ 24 66 21.0
12 X ½ 25 67 21.4
12.5 Z 26 68 21.8
13 - 27 70 22.2

指輪のサイズの測り方

既にお持ちの指輪で測る

ご自身の指に合う指輪の内径を測り、上記の表と照合してください。

指のサイズを測る

紙やメジャーを指に巻きつけ、重なる部分に印をつけ、その長さを測ってください。その寸法を基に、表で最も近いサイズを見つけてください。

Printable Ring Sizer

Print our ring size guide to measure your size at home. Please ensure printing is set to 100% scale for accurate results.

PRINT RING SIZE GUIDE

Fit Tips

  • Measure your finger at the end of the day when it is at its largest
  • Avoid measuring when your hands are cold
  • If you are between sizes, choose the larger size
  • Wider bands may fit tighter — consider sizing up slightly