Ring size guide and conversion chart (2024)

Not sure of your ring size?

We designall our rings using USA ringsizing. Read our ring sizeconversion chart below to help you find your correct size.

How to measureyour ring size in mm

1. Use a strip of paper and wrap it around your ring finger. Make sure it fits over the knuckle.

2. Use a pen to mark where the paper overlaps.

3. Measure the length of the paper from start to the pen mark using a ruler with mm measurement.

4. Use chart below to find your correct size.

For 100% accurate sizing we do recommend you visit your local jeweller.

RING SIZE CONVERSION CHART

USA, CANIRE, UK, AUSInsideDiameter (mm)
Circumference (mm)
3F14.144.2
3.5G14.5
45.4
4H14.9
46.7
4.5
I15.348
5J15.749.3
5.5K16.150.6
6L16.551.9
6.5M16.953.2
7N17.354.5
7.5O17.755.8
8P18.257.2
8.5Q18.558.2
9R18.959.3
9.5S19.461
10T19.862.3
10.5U20.263.5
11V20.765
11.5W21.166.2
12X21.567.5
12.5Y21.968.8
13Z22.370.2
14Z + 222.771.3
Ring size guide and conversion chart (2024)

FAQs

What is a size 7 ring equivalent to? ›

17.3 mm

How can I calculate my ring size? ›

Measure Your Ring Size With These Steps:
  1. Wrap string or paper around the base of your finger.
  2. Mark the point where the ends meet with a pen.
  3. Measure the string or paper with a ruler (mm) then divide by 3.14 (or Pi) to get the diameter of the ring.

What size is a 17 ring? ›

International Ring Size Conversion Chart Table
Inside DiameterUSJapan
18.1 mm816
18.5 mm8.517
19.1 mm918
19.4 mm9.519
21 more rows

How big is a size 10 ring? ›

Size 8.5 = 18.6 mm. Size 9 = 19.0 mm. Size 9.5 = 19.4 mm. Size 10 = 19.8 mm.

Is a size 8 ring big for a woman? ›

Average Woman's Ring Size

You can see that approximately half of women's ring sizes were between 6 and 8 with 7 being the most popular size. Whole sizes are more popular than half sizes and rings range from a tiny size 3 up to size 11.5.

Can a size 6 ring be resized to a 7? ›

The general rule is that a ring can be altered up or down two sizes. But of course, for every rule there are always exceptions, so it is always best to defer to an expert for guidance.

What is size 15 in ring size? ›

Inside Diameter MMInside Diameter InchesJapan/ China/ India/ South America Ring Size
17.8 mm0.70"15
18.1 mm0.71"16
18.5 mm0.73"17
19.1 mm0.75"18
19 more rows

Do ring sizes go by inches? ›

It shows sizes in diameter and circumference in both mm and inches. There is no difference between men's and women's ring sizes, so this chart applies to everybody.

What are normal ring sizes? ›

The average women's ring size is 6 and the average men's ring size is 8½ Guessing your partner's ring size correctly can be done with a little common sense. If you have a petite partner, it's likely that their hands are smaller with slender fingers, so try starting at a size 4 or 4½ for women, and around a 7 for men.

Can I measure ring size with my phone? ›

Download The Ring Sizing App™ Here.

For Android and older IOS users, it's just as easy. Simply place your ring finger on your phone screen, adjust the sizing lines to outline your finger and you'll have your ring size in minutes!

How big is a size 12 ring finger? ›

Ring Size Measurement Chart
Ring SizeDiameter, mmCircumference, mm
11½21.066.0
11¾21.266.6
1221.467.2
12¼21.667.9
49 more rows

Can a size 8 ring be sized to a 10? ›

Jewelers can only resize a ring to a maximum of two sizes up or down. Also, not all ring types are good candidates for permanent resizing methods requiring heat. Doing so would damage or destroy the following: Titanium rings.

What carat size is a ring size 7? ›

Since 2.50-carat diamond rings are so large, they should be eye-clean and colorless. A diamond of this carat weight would look ideal on a size 6.5 or 7. The 2.50 carat diamonds come in different cuts, the most popular being the round brilliant cut and the emerald cut.

What size hole is a size 7 ring? ›

InnerInnerUnited States
0.66616.926-1/2
0.67417.126-3/4
0.68217.327
0.69017.537-1/4
23 more rows

What ring size is 2.4 inches? ›

How to size your finger using the string method
Ring Size (USA)Length (Inches)Length (Millimeters)
92.35"59.1mm
9.52.4"60.3mm
102.46"61.6mm
10.52.51"62.8mm
12 more rows

What age is ring size 7? ›

Children Ring Size Guide
DiameterAge RangeSizes
16.19+
16.510+6
16.910+
17.311+7
13 more rows

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