Ring Size Conversion Chart

Whether you're shopping for yourself or planning to pop the big question soon, getting the right ring size is key. After all, you want it to fit just right. With our easy-to-follow tips and a handy ring size converter, finding the perfect fit will be a breeze. Measure your size now and find the ring that fits perfectly!

All Eternate rings on the site are specified in standard US sizes. If you've already measured your finger or know your size, you can use our handy ring size conversion chart below to compare US ring sizes to millimeters, inches or sizes used in other countries. No matter where you are, we’ve made sure you can find your size with ease. Simply take a look at the ring size converter and match up your measurement!

Inside Circumference		Inside Diameter	US & Canada	Europe	UK & Australia	Japan & Singapore
IN	MM	MM	US & Canada	Europe	UK & Australia	Japan & Singapore
1.74	44.3	14.1	3	44	F 1/2	4
1.77	44.9	14.3	3.25	45	G	5
1.79	45.6	14.5	3.5		G 1/2
1.82	46.2	14.7	3.75	46	H	6
1.84	46.8	14.9	4	47	H 1/2	7
1.87	47.4	15.1	4.25		I
1.89	48.1	15.3	4.5	48	I 1/2	8
1.92	48.7	15.5	4.75		J
1.94	49.3	15.7	5	49	J 1/2	9
1.97	50.0	15.9	5.25	50	K
1.99	50.6	16.1	5.5		K 1/2	10
2.02	51.2	16.3	5.75	51	L
2.04	51.8	16.5	6	52	L 1/2	11
2.07	52.5	16.7	6.25		M	12
2.09	53.1	16.9	6.5	53	M 1/2	13
2.12	53.7	17.1	6.75		N
2.14	54.3	17.3	7	54	N 1/2	14
2.16	55.0	17.5	7.25	55	O
2.19	55.6	17.7	7.5		O 1/2	15
2.21	56.2	17.9	7.75	56	P
2.24	56.9	18.1	8	57	P 1/2	16
2.26	57.5	18.3	8.25		Q
2.29	58.1	18.5	8.5	58	Q 1/2	17
2.33	59.1	18.8	8.75	59	R
2.35	59.7	19	9		R 1/2	18
2.37	60.3	19.2	9.25	60	S
2.40	60.9	19.4	9.5	61	S 1/2	19
2.42	61.6	19.6	9.75		T
2.45	62.2	19.8	10	62	T 1/2	20
2.47	62.8	20	10.25		U	21
2.50	63.5	20.2	10.5	63	U 1/2	22
2.52	64.1	20.4	10.75	64	V
2.55	64.7	20.6	11		V 1/2	23
2.57	65.3	20.8	11.25	65	W
2.60	66.0	21	11.5	66	W 1/2	24
2.62	66.6	21.2	11.75		X
2.65	67.2	21.4	12	67	X 1/2	25
2.67	67.9	21.6	12.25		Y
2.70	68.5	21.8	12.5	68	Z	26
2.72	69.1	22	12.75	69	Z 1/2
2.75	69.7	22.2	13	70		27
2.77	70.4	22.4	13.25		Z+1
2.80	71.0	22.6	13.5		Z+2

Ring Sizing Made Easy: Tips & Tricks for the Perfect Fit

Planning a surprise?

We have come up with some sneaky ways to learn their ring size without them ever knowing! Whether you’re planning the perfect proposal or just a thoughtful gift, we’ve got you covered.

Don’t know how to measure your ring size?

Our step-by-step guide with pictures is here for you to learn how to take a measurement of your ring size as accurately as possible. Then, you can use the ring size converter above to find out your ring size.

Already have a nice fitting ring? Use our ring size guide.

Just download and print our guide and find a ring that you wear comfortably on the same finger that you are buying your new Eternate ring for. Place the ring on the chart, use our ring size conversion chart if necessary, and you’ll find your perfect size in no time.

Get your customized home try-on kit.

We will send you replicas of the five designs you like most, made identical in size, width and color so you can see exactly how they will look on your fingers. A complementary ring sizer will be included to help you find the perfect fit.

Eternate’s Ring Size Tips

A perfectly fit ring should not come off easily when you ease it on your finger, it should rather slide smoothly. This is important both for your comfort and to minimize the risk of loss.
Size of your fingers will change with temperature and throughout the day. They expand in warm weather and shrink in cold. So don’t measure your fingers when you are cold, they are the smallest at this time. Measure your finger at the very end of day in a warm temperate when it is the largest for a more accurate reading.
Measure your ring size more than once (and review our conversion chart) before your purchase.
Your left hand and right hand are not the same size. So make sure to measure the finger you plan to wear the ring on.
If your knuckles are larger, take two measurements: one around the knuckle and one where the ring would go. Then choose a size in between. Your ring needs to fit over the knuckle but not be too loose on the finger.
Consider the width of the ring you are planning to purchase. If it is wide, go for a 0.5 larger size.
If you are hovering between two sizes, pick the larger one.

The Perfect Ring, The Perfect Fit

At Eternate, we’re by your side every step of the way, making sure you choose a piece you’ll love wearing. That’s why, besides looking good, all our rings are designed with a comfort fit, crafted to feel smooth and effortless on your finger and perfect for all-day wear.

Still not sure about your ring size after checking out our conversion chart? No worries, we’re here to help! Whether you’re stuck between sizes or just want a little extra guidance, you can reach out to us anytime. Our team is always happy to assist so you can find the perfect fit with confidence.

We know that finding the right ring size isn’t always easy, so why not try it on first? With our customized at-home try-on kit, you can test different sizes, widths and styles before making a final decision. You can try the rings on at home and see exactly how they’ll look and feel on your finger. Plus, we include a complimentary ring sizer to make sure you get it just right!