Ring Size Chart

RING SIZE GUIDE

Expert Ring Size Guide

Find your perfect ring size with international sizing references, created to make choosing the right fit feel simple and confident.

What Is a Ring Size?

Ring size is based on the inner circumference of a ring. Because sizing systems vary across countries, a clear conversion chart helps you compare measurements and choose a comfortable, accurate fit.

A well-fitting ring should slide over the knuckle with slight resistance and sit securely at the base of the finger without feeling too tight.

Sdiamond Ring Fitting

Ring Size Conversion Chart

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Inside Circumference US, Canada, Mexico France Germany, Russia, Asia India, Japan, China
IN MM
1.7444.2344144
1.7744.83.254514 1/4---
1.7945.53.545.514 1/25
1.8246.13.754614 3/46
1.8446.8447157
1.8747.44.2547.5------
1.89484.54815 1/48
1.9248.74.7548.515 1/2---
1.9449.354915 3/49
1.97505.255016---
1.9950.65.550.516 1/410
2.0251.25.7551---11
2.0451.965216 1/212
2.0953.16.5531713
2.1454.4754.517 1/414
RING SIZE GUIDE

Printable Ring Size Chart

Download the printable ring size guide for a quick and convenient way to estimate your ring size at home.

Download Size Chart
Size 344.2 mm
Size 3.545.5 mm
Size 446.8 mm
Size 4.548 mm
Size 549.3 mm
Size 5.550.6 mm
Size 651.9 mm
Size 6.553.1 mm
Size 7.555.7 mm
Size 857 mm
Size 8.558.3 mm
Size 959.9 mm
Size 9.560.8 mm
Size 1062.1 mm
Size 10.563.4 mm
Size 1164.6 mm
Size 11.565.9 mm
Size 1267.2 mm

Request a Free Ring Sizer

For a more precise fit, we are happy to send you a complimentary ring sizer to help you measure comfortably at home.

Free Sizer Tool

Ring Resizing Policy

In-Store Resizing

For newly purchased items resized immediately in store, completion is usually within 2–3 hours depending on the design and service queue.

Previously Worn Items

Approximately 10 business days, as the ring is returned to the workshop for structural inspection, stone security checks, and full re-plating.