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Sizing help

Size & Fit Guide

Measure rings, compare international sizes, and find the right necklace or bracelet length before you order.

Measure your ring

Two reliable methods

  1. 01

    Use a ring you own

    Measure the inside diameter at its widest point.

  2. 02

    Measure your finger

    Wrap a strip of paper or string around your finger, mark where it overlaps, and measure the circumference.

Tip: Measure at the end of the day for the most accurate fit.
Ring size converter

Find your international equivalent

Choose what you already know and we will show the matching sizes.

View full conversion table

Swipe horizontally on mobile

Circumference (mm) Diameter (mm) ES/IT UK/GB US
44.314.14F½3
45.614.55G½3.5
46.814.96.5H4
48.115.38I4.5
49.315.79.5J½5
50.616.110.5K½5.5
51.816.512L½6
53.116.913.5M½6.5
54.317.314.5N½7
55.617.716O½7.5
56.918.118.5P½8
58.118.519.5Q½8.5
59.719.021R½9
60.919.422.5S½9.5
62.219.823.5T½10
63.520.225U½10.5
64.720.626V½11
66.021.027W½11.5
67.221.429X½12
68.521.830Z12.5
69.722.231Z+113
71.022.632Z+213.5
Necklaces

Necklaces & Chains

Use these reference lengths to understand where a necklace may sit. The final position varies with your proportions and the design of the piece.

40 cmClose to the neck
45 cmEveryday classic
50 cmA little lower
60+ cmLong statement
Every necklace lists its length in centimetres.
Product details indicate whether the length is adjustable.
Some lengths can be modified. Ask us before ordering.
Bracelets

Bracelets & Bangles

How to measure your wrist

Use a flexible tape measure around your wrist where you would wear the bracelet. If you don't have a tape, use a strip of paper and measure it with a ruler.

Use the exact centimetre measurement shown on each product page to compare the fit.

Current size ranges

Narrow wrist
Up to 17 cm
Wide wrist
18 cm and above

Some bracelet lengths can be adjusted on request. Contact us before ordering and we will confirm what is possible.

There is no standard wrist. Every size is equally valid, and Hiddium pieces are selected for different proportions.

Still unsure?

Contact us and we will help you find the best fit before you order.