Home | Ring Size Chart

Discover Your Perfect Ring Size at Home

Using Paper Strip

Easy Ways to Measure Your Ring Size at Home

Jewelry making is a true art, and at TrionzaDiamonds, we take pride in working with master artisans who bring their exceptional craftsmanship to every handmade piece.

How to measure

Three ways to find your ring size

Watch each method, then use the chart below to match your measurement. Pick the one that suits what you have at hand.

Method 01
Method 02
Method 03

The paper strip method

Wrap a thin strip of paper around the base of your finger, mark where it overlaps, then lay it flat and measure the length in millimetres. That's your circumference.

Best forNo tools at home

Match a ring you own

Take a ring that already fits the right finger and measure its inner diameter — or lay it on your phone screen and match it to a circle. Then look up the diameter in the chart.

Best forA ring that already fits

Use a ring sizer

A plastic ring sizer gives the most accurate reading. Slip it on, tighten until it feels snug but still passes over your knuckle, and read the size from the band.

Best forThe most accurate fit

Ring Size Converter

Find Out Ring Size Equivalents Globally

OR

Discover our breathtaking selection of engagement rings and take advantage of exclusive deals and time-sensitive promotions!

Global Ring Size Guide – Find Your Match ring size chart

USA / Canada UK / Aus / NZ Japan / India / China Spain / Italy / Swiss Diameter & Circ. (mm)
3 F 4 4.25 14.05 & 44.14
3.25 F 1/2 - 4.75 14.24 & 44.74
3.5 G 5 5.5 14.45 & 45.40
3.75 G 1/2 6 6 14.65 & 46.02
4 H 7 6.75 14.88 & 46.80
4.25 H 1/2 - 7.5 15.09 & 47.40
4.5 I 8 8 15.29 & 48.00
4.75 J - 8.75 15.49 & 48.70
5 J 1/2 9 9.25 15.70 & 49.30
5.25 K - 10 15.90 & 50.00
5.5 K 1/2 10 10.5 16.10 & 50.60
5.75 L - 11.25 16.31 & 51.20
6 L 1/2 11 11.75 16.51 & 51.90
6.25 M 12 12.5 16.71 & 52.50
6.5 M 1/2 13 13.25 16.92 & 53.10
6.75 N - 13.75 17.12 & 53.80
7 N 1/2 14 14.5 17.32 & 54.40
7.25 O - 15 17.53 & 55.10
7.5 O 1/2 15 15.75 17.73 & 55.70
7.75 P - 16.25 17.93 & 56.30
8 P 1/2 16 17 18.14 & 57.00
8.25 Q - 17.5 18.34 & 57.60
8.5 Q 1/2 17 18.25 18.54 & 58.30
8.75 R - 19 18.75 & 58.90
9 R 1/2 18 19.5 18.95 & 59.50
9.25 S - 20.25 19.15 & 60.20
9.5 S 1/2 19 20.75 19.35 & 60.80
9.75 T - 21.5 19.56 & 61.40
10 T 1/2 20 22 19.76 & 62.10
10.25 U 21 22.75 19.96 & 62.70
10.5 U 1/2 22 23.25 20.17 & 63.40
10.75 V - 24 20.37 & 64.00
11 V 1/2 23 24.75 20.57 & 64.60
11.25 W - 25.25 20.78 & 65.30
11.5 W 1/2 24 26 20.98 & 65.90
11.75 X - 26.5 21.18 & 66.60
12 X 1/2 25 27.25 21.39 & 67.20
12.25 Y - 27.75 21.59 & 67.80
12.5 Z 26 28.5 21.79 & 68.50
12.75 Z 1/2 - 29 22.00 & 69.10
13 - 27 29.75 22.20 & 69.70
13.25 Z1 - 30.5 22.40 & 70.40
13.5 - - 31 22.61 & 71.00
13.75 Z2 - 31.75 22.81 & 71.70
14 Z3 - 32.25 23.01 & 72.30
14.25 - - 33 23.22 & 72.90
14.5 Z4 - 33.5 23.42 & 73.60
14.75 - - 34.25 23.62 & 74.20
15 - - 34.75 24.23 & 76.10