Ring size charts

This post was last updated on May 24th, 2021 at 10:03 pm

Ring Sizing Charts Table of Content

In this International Ring Size Chart you learn:

Ring Sizing Systems

Here at Size-charts.com, we believe in providing correct and objective information. Our main goal is to help our visitors to get the data they’re looking for. Because of that, you can find below the full International Ring Size chart for ring sizes, combined with conversion between the different systems.

The world consists of many ring sizing standards. We’re all buying more and more online, so an international Ring size Chart is the least we could add at size-charts.com.
We have gathered it from many sources in various countries the past year. This allows you to determine your local ring size compared to those from other countries.
The list of countries includes the sizing systems of US & Canada, the United Kingdom & Australia, Germany, France & Russia, Japan, and Switzerland.

International Ring Size chart

A full ring sizing and dimension chart with measurements in Centimeters and Inches. For all ring sizes you can find the ring size conversion in the below table.

Inside
Diameter
Inside
Circum-
ference
Ring Sizes
MMInchesMMInchesBritish & Australian US & CanadaFrench & RussianGermanJapaneseSwiss
9.910.39031.131.220000
10.720.44233.681.3900
11.530.45436.221.430
11.950.47437.541.49A1/2
12.180.48238.261.51A 1/23/4
12.370.48738.861.53B11
12.600.49639.581.56B 1/21 1/4
12.780.50340.151.58C1 1/2
13.000.51240.841.61C 1/21 3/4
13.210.52041.501.63D241 1/213 1/221 1/2
13.410.52842.131.66D 1/22 1/4
13.610.53642.761.68E2 1/242 3/413 3/432 3/4
13.830.54443.451.71E 1/22 3/4
14.050.55344.141.74F3441444
14.150.55744.451.75F 1/23 1/8
14.250.56144.771.76F 3/43 1/4
14.360.56545.111.77G3 3/845 1/455 1/4
14.450.56945.401.79G 1/43 1/214 1/2
14.560.57345.741.80G 1/23 5/86
14.650.57746.021.81H3 3/446 1/26 1/2
14.860.58546.681.84H 1/24157
15.040.59247.251.86I4 1/447 3/47 3/4
15.270.60147.971.89I 1/24 1/215 1/48
15.400.60648.381.90J4 5/84915 1/29
15.530.61148.791.92J 1/44 3/4
15.700.61849.321.94J 1/2515 3/49
15.800.62249.641.95K5 1/85010
15.900.62649.951.97K 1/45 1/4
16.000.63050.271.98K 1/25 3/810
16.100.63450.581.99L5 1/251 3/41611 3/4
16.300.64251.212.02L 1/45 3/4
16.410.64651.552.03L 1/25 7/8
16.510.65051.872.04M652 3/416 1/21212 3/4
16.710.65852.502.07M 1/26 1/4
16.920.66653.162.09N6 1/254171314
17.130.67453.822.12N 1/26 3/4
17.350.68354.512.15O755 1/417 1/41415 1/4
17.450.68754.822.16O 1/27 1/4
17.750.69955.762.20P7 1/256 1/217 3/41516 1/2
17.970.70756.452.22P 1/27 3/4
18.190.71657.152.25Q857 3/4181617 3/4
18.350.72257.652.27Q 1/28 1/4
18.530.72958.212.29Q 3/48 1/218 1/217
18.610.73358.472.30R8 5/85919
18.690.73658.722.31R 1/48 3/4
18.800.74059.062.32R 1/28 7/8
18.890.74859.342.35R 3/491918
19.100.75260.002.36S9 1/860 1/420 1/4
19.220.75760.382.38S 1/49 1/4
19.310.76060.662.39S 1/29 3/8
19.410.76460.982.40S 3/49 1/219 1/219
19.510.76861.292.41T9 5/861 1/221 1/2
19.620.77261.642.43T 1/49 3/4
19.840.78162.332.45T 1/2102020
20.020.78862.892.48U10 1/462 3/42122 3/4
20.200.79763.462.50U 1/210 1/220 1/422
20.320.80063.842.51V10 5/86323 3/4
20.440.80564.212.53V 1/410 3/4
20.680.81464.972.56V 1/21120 3/423
20.760.81765.222.57W11 1/86525
20.850.82165.502.58W 1/411 1/4
20.940.82465.782.59W 1/211 3/8
21.080.83066.222.61W 3/411 1/22124
21.180.83466.542.62X11 5/866 1/426 1/4
21.240.83666.732.63X 1/411 3/4
21.300.83966.922.64X 1/211 7/8
21.490.84667.512.66Y1267 1/221 1/42527 1/2
21.690.85468.142.68Y 1/212 1/4
21.890.86268.772.71Z12 1/268 3/421 3/42628 3/4
22.100.87069.432.73Z +1/212 3/4
22.330.87970.152.76Z+1132227
22.600.89071.002.80Z+1.513.5
22.690.89371.282.81Z+213.75
22.920.90272.002.83Z+2.514
23.060.90872.452.85Z+3
23.240.91573.012.87Z+3.5
23.470.92473.732.90Z+4
23.550.92773.982.91Z+4.5
23.870.94074.992.95Z+5
24.270.95676.253.00Z+6
International ring size chart

Women’s Ring Size Chart

Inside
Diameter
Inside
Circum-
ference
Women Ring Sizes
MMInchesMMInchesBritish & Australian US & CanadaFrench & RussianGermanJapaneseSwiss
14.050.55344.141.74F3441456
14.450.56945.401.79G3.545 1/214.567
14.860.58546.681.84H446 1/21578
15.400.60648.301.91I4.547 3/415 1/289
15.900.62649.951.97J55015 3/4910
16.100.63450.581.99K5.551 3/4161011 3/4
16.510.65051.872.04L652 3/416 1/21212 3/4
16.920.66653.162.09M6.554171314
17.350.68354.512.15N755 1/417 1/41415 1/4
17.750.69955.762.20O7.556 1/217 3/41516 1/2
18.190.71657.152.25P857 3/4181617 3/4
18.530.72958.212.29Q8.55918 1/21719
18.890.74859.342.35R960 1/4191820 1/4
19.410.76460.982.40S9.561 19 1/21921 1/2
19.840.78162.332.45T1062202022
20.020.78862.892.48U10.56320 1/42223
International women’s ring size chart

Men’s Ring Sizes Chart

Inside
Diameter
Inside
Circum-
ference
Ring Sizes
MMInchesMMInchesBritish & Australian US & CanadaFrench & RussianGermanJapaneseSwiss
17.750.69955.762.20O7 1/256 1/217 3/41516 1/2
18.190.71657.152.25P857 3/4181617 3/4
18.530.72958.212.29Q8.55918 1/21719
18.890.74859.342.35R960 1/4191820 1/4
19.410.76460.982.40S9.56119 1/21921 1/2
19.840.78162.332.45T 1062202022
20.200.79763.462.50U 10.56320 1/42223
20.680.81464.972.56V 116520 3/42325
21.080.83066.222.61W11.566 1/4212426 1/4
21.490.84667.512.66X1267 1/221 1/42527 1/2
21.890.86268.772.71Y12.568 3/421 3/42628 3/4
22.330.87970.152.76Z132227
22.600.89071.002.80Z+1.513.5
22.920.90272.002.83Z+2.514
International Men ring size chart

The impact of the Ring Profile and Ring Width

With most jewelry brands there’s an extensive choice in many models and in different widths. The profile shape and width have a major influence on the size of the ring. Time to highlight this as well in this international Ring Size Chart.

Rings that have a convex profile on the inside slide much easier on the finger than rings that are straight on the inside.

Ring Width Size Chart and conversion guide

Below is a chart that shows common ring widths in millimeters converted to inches. If you have a ruler close to you, it is easy to visualize how wide the ring you are about to order will be. Width in rings does matter for comfort and wearing of the ring: Narrow rings are easier to put on and take off than wide rings.

Ring Band Size Chart Converting millimeters to inches

Conversion Ring Width MMConversion Ring Width Inches
mminches
2 mm0.07″
4 mm0.15″
6 mm0.23″
8 mm0.31″
10 mm0.39″
12 mm0.47″
14 mm0.55″
16 mm0.62″
18 mm0.70″
20 mm0.78″
mm to inches ring width size conversion table

If you don’t happen to have a ruler nearby, you can use something simple like a coin that is round and simulates the width of a ring. Like a 5¢ US nickel. The thickness of a nickel is 2 mm thick.

FINE Ring Width
Fine rings are 2-3 mm wide.
NARROW Width
Narrow rings are 5-7mm wide.
WIDE Ring Width
Wide rings are 8-10mm wide. Most used for larger hands.

In the choice of the ring of your dreams, some brands might offer sample rings. You choose the profile and the size, and the jeweler uses this data to create a sample ring.

How do I measure the ring size I need?

You have found a beautiful ring in a webshop, and you would like to buy the ring. But how do you know if the ring fits properly? In the below how to measure your ring section you will find some easy ways how to determine a ring size.

Below you will find three common ways to measure your ring size right at home.
Ring sizes are displayed in different ways. Some brands choose to use the inner diameter in millimeters as the size. Other brands choose to use the inner circumference as the size. Sometimes the American ring size is also used. It’s not difficult in itself, but a bit confusing every now and then. We almost always use the inner diameter, because it is the easiest to determine yourself.

Time needed: 2 minutes.

Determining your ring size can be done in a number of easy ways. Let’s look into some ways

  1. Ring size and temperature: Take ring measurement of your fingers on different times of the day

    If you are going to measure your ring size, you have to take into account one important detail: your fingers expand with heat.
    This can happen on hot days in the summer, but also in a warm room.
    It is advisable to measure your ring size at different times of the day. For example, do this in the morning, afternoon, and evening. Then take the average of all measurement moments to find the ideal size for your ring.

  2. Measure the diameter with a ring

    The easiest way to determine a ring size is on the basis of a ring that fits you well and is comfortable. This way is also useful if, for example, you want to surprise someone with a ring and you do not want to ask them about their size. You can then easily ‘borrow’ a ring to measure.
    Measure ring size with a ruler
    Take the matching ring and place it centered on the measurement units of a ruler. Place the inside of the ring at 0 cm and read the number of millimeters on the other inside. This is the inner diameter ring size. We use the diameter ring size the most. You can look up in the table which circumference ring size belongs to that.

  3. Measure the circumference without the ring

    If a suitable ring is not available, it is best to estimate the diameter of the ring by using a ribbon or string.
    Measure ring size with a ribbon or string
    Loosely wrap the ribbon or string around the finger on which the ring will be worn and cut it where the ribbon meets. Measure the piece that remains with a ruler in millimeters. The length of the ribbon is the circumference of your finger and therefore the circumference ring size you need. You can easily look up the diameter ring size in the table above.
    Measure the ring size with paper, scissors and pencil
    You can also cut a strip of paper to wrap around your finger for this method. You can then simply mark the size with a pencil or pen. Measure the length along a ruler. You measure the circumference ring size that you need.
    Measure the ring size with a paper strip and pencil

  4. Use a tape measure

    This is not a very accurate method, but it is easy and fast. The advantage is that a measuring tape is nice and wide, so you measure over a somewhat larger part of the finger. Proceed as follows: Wrap the measuring tape around the finger and read the number of millimeters where the tape meets again. The length you now have is the inner circumference of the ring. You now know the circumference ring size of the finger. You can look up the diameter of the ring size in the table above.

  5. Consider your knuckle Size.

    when you have large knuckles, you should order half a size bigger than what your finger ring size measurement alone shows, otherwise it will be very unlikely you can slide your ring into the right place.

  6. Use a Caliper of go to a jeweler

  7. Check your Ring measurements in the above Ring Size Charts

Convert Ring size Diameter and Ring Size Circumference into US Ring sizes

You will find a size chart below to find the ring size. On the left is a list of diameters in millimeters. If you know the diameter, you can look up the corresponding circumference size to the right of it. In the middle you will find the circumference size in millimeters. If you know the circumference size of the finger, you can look up the diameter size to the left of it.

Diameter ring size (mm)Circumference ring size (mm)US ring size
15484.5
15.5495
16505.5
16.2551 
16.5526
17536.5
17.25547
17.5557.5
18568
18.2557 
18.5588.5
19599
19.2560 
19.5619.5
19.756210
206310.5
20.2564 
20.56511
216611.5
21.56812
226913
Ring Diameter and Ring Circumference to US Ring Size Converter

Convert Ring Size: Most Used Ring Sizes Conversion

Although the European ring size (the circumference in millimeters) or the inner diameter of the ring is most often used, there are other ways to express ring sizes as well as you have discovered on this page

Sometimes the US size or the UK size is used. We have linked these ring sizes to the European ring sizes for you and put them in a clear table.

Diameter
(mm)
Diameter
(inches)
Europe
Ring Size 
UK/AUS
 Ring Size
VS/CAN
 Ring Size
RING
Size
14,747H47
15,248I4,58
15,549J59
15,950K5,510
16,351L611
16,652M6,512
17,254N714
17,555O7,515
17,856P816
18,358Q8,517
18,659R919
19,160S9,520
19,562T1021
19,963U10,523
20,364V1124
20,765W11,525
21,266X1226
21,568Y12,528
21,969Z1329

You can easily convert your ring size using this table. For example, if you know your US size or UK size, or you know the diameter of your ring size, you can read in the table which ring size you should choose in shopping for your ring, wedding ring, engagement ring, etc…

When converting your ring size, the same applies to measuring the ring size: if you do not arrive at a standard size as indicated in the ring size table, then choose the nearest (larger) size.

Ring Sizing frequently asked Questions

How do you calculate your ring size?

A Simple way is to wrap measuring tape around the finger and read the number of millimeters / inches where the tape meets again. The length you now have is the inner circumference of the ring. You now know the circumference ring size of the finger. You can look up the diameter of the ring size in the table above and convert it to the correct international ring size standard

Is your ring size the same as your shoe size?

There’s this rule of thumb about the relation between US shoe size and US ring size. However, it’s not confirmed by chart you can divide the shoe size by 2 and add 3. But again this is an indication and many factors depend on your body shape. Weight or stature doesn’t say anything about the ring size, the ring size only depends on the shape, length, and thickness of your fingers!

Are there different types of ring sizes?

While choosing a ring, you may come across different sizes. In some cases, the size is indicated by the inner diameter of the ring. That means the distance between the insides of the ring. Then there is also the circumference of the ring. These two sizes are simply indicated in millimeters or inches. From that Ring dimension, you can convert to the international ring sizes like US size, EU size, UK size of rings in the above ring size charts.

Is there a difference between men and women’s ring sizes?

It is sometimes thought that men and women have different ring sizes, but that is not true. Most men’s rings are made in larger sizes, as men often have wider hands and fingers. So if you are going to measure a men’s ring or do you need a women’s ring, you just use the same method to determine the size.

What’s the average ring size for women?

The average ring size woman is around ring size 17 EU , Size N in UK and Size 6.5 US. A useful list below finding the average women’s ring size:
1. Ring Diameter: 17mm / 0,66″
2. Ring Circumference: 53mm / 2.1″
3. US/Canada Ring Size: 6.5
4. UK/Australian Ring Size: N
5. French/Russian Ring Size: 54
6. German Ring Size: 17
7. Japanese Ring Size: 13
8. Swiss Ring Size: 15.25 (15 1/4)

Weight or stature doesn’t say anything about the ring size, the ring size only depends on the shape, length, and thickness of your fingers!

What’s the average ring size for men?

The average man has ring size 21 EU, Size Y in UK and US Size 12. A useful list below finding the average Men’s ring size:
1. Ring Diameter: 21,4mm / 0,84″
2. Ring Circumference: 67mm / 2.6″
3. US/Canada Ring Size: 12
4. UK/Australian Ring Size: Y
5. French/Russian Ring Size: 67.5
6. German Ring Size: 21
7. Japanese Ring Size: 25
8. Swiss Ring Size: 27.5 (27 1/2)

Weight or stature doesn’t say anything about the ring size, the ring size only depends on the shape, length, and thickness of your fingers!

When is the best time tom measure ring size?

If you are going to measure your ring size, you have to take into account one important detail: your fingers expand with heat. This can happen on hot days in the summer, but also in a warm room. That is why it is advisable to measure your ring size at different times of the day. For example, do this in the morning, afternoon and evening. Then take the average of all measurement moments to find the ideal size for your ring.

Which hand do you wear the ring on?

As this can vary per country, we provide you with a summary below:
In Germany and Austria, the wedding ring is worn on the right, the “righteous” hand. Internationally, the wedding ring is worn on the left hand, closest to the heart.
The engagement ring is usually worn on the left hand. There is a clear international trend to combine engagement ring and wedding ring on one finger.
If you wear your ring as a jewel or a friendship ring, you are free to choose any finger

How wide is a 8mm ring?

An 8mm ring is as about the width of four coins (5ct Nickle) stacked together. A standard US uses nickle measures 1/16 of an inch, which is almost 2mm wide. Four nickles, or 8mm, would measure 1/4 inch. Check the full ring width conversion table here

What is the best Ring Width size for a man?

The most common ring width for men is about 8mm or 0.25″ wide.
Men with larger finger sizes prefer wider rings. A majority of men that have a finger size under 9.0 choose a 6 mm wide ring. Men with finger sizes above 9.0 tend to prefer an 8 mm wide ring, or even a 10 mm wide ring. The width of the ring is a personal choice and size doesn’t really influence fitting or comfort. Men wearing a wedding ring for the first time or are not used to wearing a ring go for a 4mm or 0.12″ sized ring.

What is the most common women’s ring width?

The most common ring width for women is 4 mm or 0.12″.
Women with smaller finger sizes, under size 6.0 choose a small 2 mm wide wedding or engagement ring. The trend is to go more to wider rings so many rings only start from 6 mm or wider, and it is common for women to use a 6 mm ring. Like it does for men’s ring width choice it’s a personal preference.

Ring Size Charts of world-famous brands

About Ring Sizes

Our main focus is to provide you correct info about rings and the different size all over the world at size-charts.com.
We make it easy to find out your size. This page provides you a clear International Ring Size Chart with dimensions for determining your finger and ring size, which will help you buy it online or offline.

More and more consumers purchase goods through online shopping.
There is a requirement to ensure that potentially expensive purchases like rings are made properly right from the start.

At size-charts.com : Size does matter.

https://www.brandfield.nl/info/ringmaten/

The picture in this page is by Leah Kelley via Pexels

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