Ring Size Guide

Choosing the correct size is important for wearing your ring comfortably. Please check your finger size before purchasing.

Ring Size Chart

This chart lists Japanese ring sizes (1–30) and their corresponding inner circumferences.

The inner circumference is the length around the inside of the ring.

Japanese Size	Inner Circumference (mm)	International Size (ISO Standard)
1	40.8	41
2	41.9	42
3	42.9	43
4	44.0	44
5	45.0	45
6	46.1	46
7	47.1	47
8	48.2	48
9	49.2	49
10	50.3	50
11	51.3	51
12	52.4	52
13	53.4	53
14	54.5	54
15	55.5	55
16	56.5	56
17	57.6	57
18	58.6	58
19	59.7	59
20	60.7	60
21	61.8	61
22	62.8	62
23	63.9	63
24	64.9	64
25	66.0	65
26	67.0	66
27	68.0	67
28	69.0	68
29	70.0	69
30	71.0	70

How to Measure Your Ring Size

1. Have a Store Measure Your Finger

This is the most reliable and recommended method.
Have your finger size measured at a jewelry store, and if possible, try on a ring with a width and shape similar to the one you plan to purchase.

2. Use a Ring Sizer

A ring sizer is a tool designed to measure ring size.
If you are checking your size at home, we recommend using a ring sizer.

3. Use Paper or String

Wrap a non-stretch piece of paper or string around your finger and measure the length of the circumference.
However, this method is not recommended for determining an accurate size, as the tightness of the wrap can easily lead to errors.

Important Tips for Choosing a Size

Finger thickness varies depending on the time of day and swelling.
Even rings of the same size can fit differently depending on their width and shape.
When purchasing a wide ring, check your size using a ring with as similar a shape as possible.
If you are unsure of your size, we recommend having it measured at a specialty store or using a ring sizer before purchasing.

Please Check Before Purchasing
IMULTA rings are made to order.
If you are unsure about your size, please check it before placing your order.