How To Determine Ring Size | Chart & Measure Guide

Learn about diamonds

• FINDING THE RIGHT DIAMOND
  • Choosing a Shape
  • The Four C's
  • Cut Grade
  • Diamond Anatomy
  • What Makes a Diamond Sparkle
  • What is a Super Ideal Diamond?
  • Hearts and Arrows
  • Evaluation & Grading Tools
  • Grading Reports & Inscriptions
  • Ring Size
• WHY SHOP FOR A LOOSE DIAMOND?
• ABOUT DIAMONDS
  • What is a Diamond?
  • What makes a Diamond Special?
  • Manufacturing the Diamond
• DIAMOND GLOSSARY
• DIAMOND CARE
  • Cleaning Precious Metals
  • Gold and Gold Karats
• APPRAISING & INSURANCE TIPS

RING SIZE

International Ring Sizes

Size in MM	US & Canada	Great Britain	Japan	France	Switzerland	Germany
44.1	3	F	4	44	4	14
45.4	3 1/2	G	5	45 1/4	5 1/4	14 1/2
46.7	4	H 1/2	7	46 1/2	6 1/2	15
48.0	4 1/2	I 1/2	8	47 3/4	7 3/4	15 1/2
49.2	5	J 1/2	9	49	9	15 3/4
50.5	5 1/2	K 1/2	10	50 1/4	10 1/4	16 1/4
51.8	6	L 1/2	12	51 1/2	11 1/2	16 1/2
53.1	6 1/2	M 1/2	13	52 3/4	12 3/4	17
54.3	7	O	14	54	14	17 1/4
55.6	7 1/2	P	15	55 1/4	15 1/4	17 3/4
56.9	8	Q	16	56 1/2	16 1/2	18
58.2	8 1/2	R	17	57 3/4	17 3/4	18 1/2
59.4	9	S	18	59	19	19
60.7	9 1/2	--	19	60 1/4	20 1/4	19 1/2
62.0	10	T 1/2	20	61 1/2	21 1/2	20
63.3	10 1/2	U 1/2	22	62 3/4	22 3/4	20 1/2
64.5	11	V 1/2	23	64	24	20 3/4
65.8	11 1/2	W 1/2	24	65 1/4	25 1/4	21
67.1	12	Y	25	66 1/2	26 1/2	21 1/4
68.3	12 1/2	Z	26	67 3/4	27 3/4	21 3/4
69.6	13	--	27	69	29	22

To determine your ring size, do the following:

• Use a piece of string or dental floss and wrap it around the base of your finger.
• Use a pen to mark the point on the string where the end meets.
• Use a millimeter ruler to measure the string.
• Choose the closest measurement to the chart above to find your ring size.

Tips for best results:

• Allow enough room to accommodate your knuckle.
• Bear in mind, different fingers on the same and the opposite hand may have different sizes. Therefore, measure the specific finger on which you are planning to wear the ring.
• Measure your finger at the end of the day when your finger is likely to be largest.

Were your questions answered? Click here to contact us today.

Back to Top | NEXT - Why Shop for a Loose Diamond?

Call 1.866.433.2570 to speak with a consultant. Lab graded diamonds come with FREE SHIPPING and a 30 DAY MONEY BACK GUARANTEE. » CONFLICT FREE DIAMOND GUARANTEE » EMAIL PAGE TO A FRIEND » REFER A FRIEND » READ OUR GOOGLE REVIEWS » READ OUR BLOG » JOIN US ON FACEBOOK New York City best source diamond engagement rings,designer engagement rings, custom design engagement rings, wedding bands, wedding rings, eternity rings, diamond wedding rings, diamond jewelry, ideal cut diamonds, GIA graded diamonds, GIA certificates, AGS graded diamonds, AGS Ideal cut diamonds, EGL certificate diamonds, Diamond District, ideal cut engagement rings, New York Diamond District, private viewing salon, custom designed jewelry, customed designed diamond jewellery, Furrer-Jacot wedding bands, Furrer-Jacot engagement rings, Stardust engagement rings, TIA engagement rings, Vatche engagement rings, Vatche exclusive designs jewelry, Riviera Collection engagement Rings, Halo engagement rings, split-shank engagement rings, side stone engagement rings, solitaire engagement rings, pave engagement rings, bridal jewelry, men's rings, men's wedding bands, men's engagement rings, colored stones engagement rings, sapphire ruby emerald engagement rings and antique engagement rings. © 2007-2026 Diamond Ideals. All rights reserved. Visit Our New York Jewelry Showroom . Site Map . Terms & Conditions . Our Policy