Question 1

How do I measure my ring size at home?

Accepted Answer

Wrap a string or paper strip around your finger, mark where it overlaps, then measure the length. Use our calculator to convert the circumference to ring size. Measure when your hands are warm and at the end of the day for most accurate results.

Question 2

What is the difference between US, UK, and EU ring sizes?

Accepted Answer

US sizes use numbers (4-15), UK uses letters (A-Z), and EU uses circumference in mm. For example, US size 7 = UK size N = EU size 54mm. Our calculator converts between all international sizing systems.

Question 3

When is the best time to measure ring size?

Accepted Answer

Measure ring size at the end of the day when fingers are slightly swollen from daily activities. Avoid measuring when hands are cold, as fingers shrink, or immediately after exercise when they may be swollen.

Question 4

Should I size up or down if I'm between sizes?

Accepted Answer

Generally size up if you're between sizes, especially for wide bands (over 6mm). Wide rings feel tighter than thin bands. Consider the season - fingers are smaller in winter and larger in summer.

Question 5

How much does ring width affect sizing?

Accepted Answer

Wide rings (8mm+) typically require going up 1/2 to 1 full size larger than your normal size. Rings under 3mm can often be the same as your standard size. The wider the band, the larger the size needed for comfort.

US Size	UK Size	EU Size (mm)	Diameter (mm)	Circumference (mm)
3	F	44	14	44
3.5	G	46	14.6	46
4	H	47	14.9	47
4.5	I	48	15.3	48
5	J	50	15.9	50
5.5	K	51	16.2	51
6	L	52	16.5	52
6.5	M	54	17.2	54
7	N	55	17.5	55
7.5	O	56	17.8	56
8	P	57	18.2	57
8.5	Q	58	18.5	58
9	R	59	18.8	59
9.5	S	61	19.4	61
10	T	62	19.7	62
10.5	U	63	20	63
11	V	64	20.4	64
11.5	W	66	21	66
12	X	67	21.3	67
12.5	Y	68	21.6	68
13	Z	69	22	69

Ring Size Calculator

Ring Size Measurement

How to Measure at Home

String/Paper Method (Most Accurate)

Existing Ring Method

Your Ring Size

Sizing Tips

Complete Ring Size Chart

Complete Ring Sizing Guide

Best Time to Measure

Factors Affecting Size