Ring Blank Sizing Chart - A Complete Guide

Sep 13, 2023
Ring Blank Sizing Chart - A Complete Guide

Ring Blank Sizing Chart - A Complete Guide

Ever struggled with finding the right ring size? Don't worry you're not alone. Ring sizing can be confusing if you don't understand how ring sizes work and how to properly measure your finger. But we've got you covered with this complete guide to ring blank sizing charts. You'll know exactly what ring size you need for the perfect fit and how to measure for the most accurate ring size. Read on to become a ring sizing guru!

Understanding Ring Sizes - The Basics

Ring sizes are measured using a simple numerical scale that refers to the circumference of your finger in millimeters. Most rings come in sizes that range from size 3 to size 13 with half and quarter sizes in between for the perfect fit.The best way to determine your ring size at home is to use a ring sizer. You can find inexpensive ring sizers online or at most jewelry stores that will allow you to physically try on different sizes to find your best fit. For the most accurate sizing measure the base of the finger you plan to wear the ring on.

Finger Position Matters

How your finger is positioned can affect your ring size. When sizing your finger make sure your hand is at room temperature and your finger is in a natural, relaxed position. Bending your finger or making a fist will make an incorrectly small size. It's also a good idea to size your finger at the end of the day when your fingers are naturally more swollen. This will ensure the most comfortable fit. You want a ring that spins easily over the knuckle but still feels snug enough that it won't fall off.


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How to Measure Your Ring Size Properly?

To get the right ring size, you'll need to measure your finger accurately. It's not as simple as just wrapping a tape measure around your finger - there are a few factors to keep in mind.

Measuring Your Finger

First, you'll want to measure in the evening when your fingers are at their largest. Use a flexible tape measure and wrap it snugly around the base of your finger without it pinching.

Have someone else take the measurement while your hand is relaxed at your side. Make sure the tape is level all the way around. For the most accurate reading, measure to the nearest 1/4 inch. It's best to measure the finger you intend to wear the ring on. If you're not sure which finger yet or plan to wear rings on multiple fingers, measure both ring fingers and possibly your middle fingers as well.

Consider the Ring Style

The ring style also impacts the size. Snug-fitting rings like eternity bands should be sized a bit smaller, around 1/4 to 1/2 size. Looser rings like cocktail rings can be sized a bit larger, up to 1 whole size bigger. For wide bands, size up by 1/2 for comfort. Gemstone rings may require sizing up for the best fit depending on the setting and gem shape. It's always better to size up and have a ring enlarged than to size down which risks the ring being too tight.

But when in doubt it never hurts to get sized by a jeweler to ensure the best fit for your special ring.

Factors That Affect Your Ring Size

The size of your ring can depend on several factors. Some aspects are fixed, while others may fluctuate over time. 

Finger Size

Your finger size is the most obvious factor that determines your ring size. As you age, your fingers may become longer or wider, changing your ring size. It’s a good idea to have your ring size measured every few years to account for these natural changes.

Weight Changes

Gaining or losing a significant amount of weight can affect your ring size. As your weight fluctuates, the size and shape of your fingers are also likely to change. If you’ve recently lost or gained more than 10-15 pounds, have your ring size re-measured to ensure your rings still fit properly.

Swelling

The amount your fingers swell can impact how your rings fit from day to day. Several factors like heat, exercise, pregnancy, and health conditions can cause temporary swelling in your fingers. Rings that usually fit perfectly may feel tight during times of increased swelling. It’s best to have your rings sized to comfortably fit even when your fingers are most swollen. You can also consider adjustable ring designs or sizing beads to help accommodate swelling.

Seasonal Changes

The time of year and temperature can cause subtle changes in your ring size. Your fingers typically swell more in warm summer months than in cooler winter months. For the best year-round fit have your rings sized during the summer when your fingers are most swollen. Your rings may feel slightly loose in the winter but should still fit comfortably.Scheduling regular ring sizing appointments with your jeweler will also ensure an ideal fit for years to come.


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Finding the Right Ring Blank Size for Your Design

Finding the right ring blank size for your ring design is an important step. The ring blank is the base metal band that you build your ring upon, so choosing the correct size ensures your finished ring will fit comfortably and look proportional.

Measure Your Finger

The only way to determine your exact ring blank size is to measure your finger. You'll need a flexible tape measure or a strip of paper. Wrap the tape snugly around the base of your finger, where you want the ring to sit. Mark the point where the tape meets and remove. Measure the distance between the marks in millimeters. Compare your measurement to a ring blank sizing chart. Ring blanks typically come in full and half sizes, ranging from size 3 to size 15. If your measurement falls between two sizes, round up to the next largest size. It's easier for a jeweler to size down a ring blank than size up, and you want to ensure maximum comfort.


For the most accurate sizing, measure your finger at the end of the day when it's slightly swollen from normal activities. Your finger size can vary based on factors like warmth, water retention, and exercise. Measuring at the end of the day ensures your ring will still fit comfortably even when your finger is at its largest.

Choose a Ring Blank Shape

You need to choose a ring blank shape that complements your ring design. The most common shapes are round, square, flat court, and oval. A round ring blank works well for a classic solitaire or three-stone ring. A square or rectangular shape creates a contemporary look. An oval ring blank pairs nicely with an oval center gemstone.

Metal Type

Select a metal for your ring blank that matches your desired ring design. The most popular options are yellow gold, white gold, rose gold, sterling silver, and platinum. Yellow or rose gold pair well with gemstones like citrine or morganite. White gold or platinum complement colorless diamonds or blue sapphires. Sterling silver works with a variety of gemstones.

Consider factors like metal purity, durability and your budget to choose the right ring blank metal for your needs.With the right ring blank size, shape and metal type chosen, you'll have the perfect base for creating a custom ring you'll cherish for years to come.

Tips for Getting the Perfect Ring Fit

Getting the right fit for your ring blank is key to comfort and avoiding issues down the road. Here are some tips to help you find your perfect ring size:

Use a Ring Sizer

The most accurate way to determine your ring size is to get professionally sized using a ring sizer. Many jewelers offer free ring sizing services, so take advantage of it. They can measure your finger precisely to determine your exact size.

Measure Your Finger at home

If getting sized in person isn't possible, you can measure your finger at home using a flexible tape measure. Measure the base of the finger you plan to wear the ring on. For the most accurate measurement, do this in the evening when your fingers are naturally more swollen. Wrap the tape snugly around the finger without pinching the skin. Use the measurement in inches and refer to a ring size conversion chart to determine your size.

Consider the Width of the Ring

The width and thickness of the ring blank can also affect how it fits. A wider ring may require sizing up by 1/2 size for the best fit. Thicker rings can sometimes feel tighter, so keep that in mind.

Think About the Metal Type

Certain metals like gold and platinum are softer and more malleable, so they may require a slightly larger size. Stiffer metals like tungsten and cobalt chrome can typically be sized more precisely.

Does Your Ring Need to be Resized?

Most jewelers can resize rings up or down by several sizes if needed. Get the ring resized as soon as possible for the most comfortable fit and to avoid any issues. It's often easier and less expensive to re-size a ring before you've worn it for long. Following these useful tips will help ensure you end up with a ring blank that fits like it was made for you.


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Ring Blank Sizing Chart Table


US Ring Size2.6 mm thick2.4 mm thick2.2 mm thick2.1 mm thick2.0 mm thick1.8 mm thick1.6 mm thick1.4 mm thick1.3 mm thick1.2 mm thick1.0 mm thick0.8 mm thick
147.1 mm long46.5 mm long45.9 mm long45.6 mm long45.2 mm long44.6 mm long44.0 mm long43.4 mm long43.0 mm long42.7 mm long42.1 mm long41.5 mm long
1 1/248.4 mm long47.8 mm long47.1 mm long46.8 mm long46.5 mm long45.9 mm long45.2 mm long44.6 mm long44.3 mm long44.0 mm long43.4 mm long42.7 mm long
249.6 mm long49.0 mm long48.4 mm long48.1 mm long47.8 mm long47.1 mm long46.5 mm long45.9 mm long45.6 mm long45.2 mm long44.6 mm long44.0 mm long
2 1/250.9 mm long50.3 mm long49.6 mm long49.3 mm long49.0 mm long48.4 mm long47.8 mm long47.1 mm long46.8 mm long46.5 mm long45.9 mm long45.2 mm long
352.2 mm long51.5 mm long50.9 mm long50.6 mm long50.3 mm long49.6 mm long49.0 mm long48.4 mm long48.1 mm long47.8 mm long47.1 mm long46.5 mm long
3 1/253.4 mm long52.8 mm long52.2 mm long51.8 mm long51.5 mm long50.9 mm long50.3 mm long49.6 mm long49.3 mm long49.0 mm long48.4 mm long47.8 mm long
454.7 mm long54.0 mm long53.4 mm long53.1 mm long52.8 mm long52.2 mm long51.5 mm long50.9 mm long50.6 mm long50.3 mm long49.6 mm long49.0 mm long
4 1/255.9 mm long55.3 mm long54.7 mm long54.3 mm long54.0 mm long53.4 mm long52.8 mm long52.2 mm long51.8 mm long51.5 mm long50.9 mm long50.3 mm long
557.2 mm long56.5 mm long55.9 mm long55.6 mm long55.3 mm long54.7 mm long54.0 mm long53.4 mm long53.1 mm long52.8 mm long52.2 mm long51.5 mm long
5 1/258.4 mm long57.8 mm long57.2 mm long56.9 mm long56.5 mm long55.9 mm long55.3 mm long54.7 mm long54.3 mm long54.0 mm long53.4 mm long52.8 mm long
659.7 mm long59.1 mm long58.4 mm long58.1 mm long57.8 mm long57.2 mm long56.5 mm long55.9 mm long55.6 mm long55.3 mm long54.7 mm long54.0 mm long
6 1/260.9 mm long60.3 mm long59.7 mm long59.4 mm long59.1 mm long58.4 mm long57.8 mm long57.2 mm long56.9 mm long56.5 mm long55.9 mm long55.3 mm long
762.2 mm long61.6 mm long60.9 mm long60.6 mm long60.3 mm long59.7 mm long59.1 mm long58.4 mm long58.1 mm long57.8 mm long57.2 mm long56.5 mm long
7 1/263.5 mm long62.8 mm long62.2 mm long61.9 mm long61.6 mm long60.9 mm long60.3 mm long59.7 mm long59.4 mm long59.1 mm long58.4 mm long57.8 mm long
864.7 mm long64.1 mm long63.5 mm long63.1 mm long62.8 mm long62.2 mm long61.6 mm long60.9 mm long60.6 mm long60.3 mm long59.7 mm long59.1 mm long
8 1/266.0 mm long65.3 mm long64.7 mm long64.4 mm long64.1 mm long63.5 mm long62.8 mm long62.2 mm long61.9 mm long61.6 mm long60.9 mm long60.3 mm long
967.2 mm long66.6 mm long66.0 mm long65.7 mm long65.3 mm long64.7 mm long64.1 mm long63.5 mm long63.1 mm long62.8 mm long62.2 mm long61.6 mm long
9 1/268.5 mm long67.9 mm long67.2 mm long66.9 mm long66.6 mm long66.0 mm long65.3 mm long64.7 mm long64.4 mm long64.1 mm long63.5 mm long62.8 mm long
1069.7 mm long69.1 mm long68.5 mm long68.2 mm long67.9 mm long67.2 mm long66.6 mm long66.0 mm long65.7 mm long65.3 mm long64.7 mm long64.1 mm long
10 1/271.0 mm long70.4 mm long69.7 mm long69.4 mm long69.1 mm long68.5 mm long67.9 mm long67.2 mm long66.9 mm long66.6 mm long66.0 mm long65.3 mm long
1172.3 mm long71.6 mm long71.0 mm long70.7 mm long70.4 mm long69.7 mm long69.1 mm long68.5 mm long68.2 mm long67.9 mm long67.2 mm long66.6 mm long
11 1/273.5 mm long72.9 mm long72.3 mm long71.9 mm long71.6 mm long71.0 mm long70.4 mm long69.7 mm long69.4 mm long69.1 mm long68.5 mm long67.9 mm long
1274.8 mm long74.1 mm long73.5 mm long73.2 mm long72.9 mm long72.3 mm long71.6 mm long71.0 mm long70.7 mm long70.4 mm long69.7 mm long69.1 mm long
12 1/276.0 mm long75.4 mm long74.8 mm long74.5 mm long74.1 mm long73.5 mm long72.9 mm long72.3 mm long71.9 mm long71.6 mm long71.0 mm long70.4 mm long
1377.3 mm long76.7 mm long76.0 mm long75.7 mm long75.4 mm long74.8 mm long74.1 mm long73.5 mm long73.2 mm long72.9 mm long72.3 mm long71.6 mm long
13 1/279.5 mm long78.9 mm long78.2 mm long77.9 mm long77.6 mm long77.0 mm long76.3 mm long75.7 mm long75.4 mm long75.1 mm long74.5 mm long73.8 mm long
1480.7 mm long80.1 mm long79.5 mm long79.2 mm long78.9 mm long78.2 mm long77.6 mm long77.0 mm long76.7 mm long76.3 mm long75.7 mm long75.1 mm long

Add 0.5 mm to these lengths if the right band is wider than 4 mm.

Ring Blank Sizing Image Chart 


Conclusion

So there you have it, a complete guide to ring blank sizing. Now that you understand the basics and have the sizing charts as a reference, you can confidently buy rings that will fit perfectly. No more guessing games or rings that slip and slide all over your fingers. Go forth and shop for rings with confidence, you've got this!


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Ring Size Chart & Conversion Guide (how to get it right)

You can be in the market for an engagement ring or simply picking up something you see as fun and flashy to wear on a daily basis, but a comfortable fit is the key.


Actually, you don’t deserve just a comfortable fit. You deserve a PERFECT fit.


For this reason, it’s really important to measure your ring size while you’re sitting in your own home. Whichever finger you’re shopping for, you’ll find the correct size for your rings.

What is an average ring size?

All our bodies are different shapes and sizes, so what would you expect our finger sizes to be?! However, according to data from jewelry stores around the world, some ring sizes are more common than others.


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Most women’s ring fingers fit a size 3 to a size 6.5 in the U.S. On an average, women are 6.5 the world over. For men’s rings the average size range is 9 to 10 with 9 being the most popular size.

Your Ring Size Guide

Mind the Time of Day

You may not know, but your finger size is subject to time of day. Your finger size often isn’t as large as it is when it’s early in the morning and still chilly out. In other words, measuring your finger early in the morning may lead to a too-snug ring… later. That’s why you wait until the early evening when temperatures are warmer so you don’t have such a tight fit.

Take the Right (or Left) Hand Measurement

Don’t forget that the fingers of your dominant hand are usually bigger than those on your non dominant hand. If you're sizing for an engagement ring or wedding band, this means do the left, not the right ring finger. The two can be fairly different though.

Beware of the Knuckle

Don’t forget to measure the knuckle when you’re measuring your finger. If your base of finger is very small then you can put the size of the ring past the knuckle. So to make sure that your ring goes on easily, and stays on, try measuring both your knuckle and finger base, and if possible measure the ring before you buy it.

Check Out the Ring Itself

When selecting your size try to keep in mind how large you want the ring to be. However, wider bands generally are more snug fit, if the band is wider than 6mm, you will want to order a ring size slightly larger. You should be able to get away with a quarter to a half size difference.

Chain rings run small as well; so you may have to go a full size bigger for the perfect fit.

Well, now you’re good to go. These are the easiest ways to size a ring.

Go to a Jeweler

You’re thinking, well duh. Of course, if you’re having difficulty, a jeweler can easily tell you what size you are pretty quickly by using a ring sizing tool. So, we’re all pretty busy, and what if you see the perfect trendy gemstone ring online, that you just have to buy right now!!!


We don’t always have time to go to the jewelry store. Luckily, there are ways you can measure your calipers at home.

Printable Ring Sizer Tools

And you don’t need to spend any money to 'DIY' it with a printable ring sizing tool. Print it out, wrap it around the base of the finger you’ll be wearing the ring on, and make a mark on the spot where that one spot overlaps the other one.


Printers are quite out of fashion, so if you don’t have one lying about that’s fine, you can skip to one of the other mentions below as well.

Try a Tape Measure

With a measuring tape, you can easily measure your correct ring size by wrapping it around the base of your finger. Measure in millimeters then pop it on your ring size chart. Voila, you’re done.

Use a String

No tape measure in the house? No problem.

  • Step 1: Take a piece of string, floss, or even a strip of paper.

  • Step 2: You guessed it, wrap it around – the base of your finger.

  • Step 3: Using a marker or pen, draw a line where the ends overlap.

  • Step 4: Bring your ruler line to line and take note of the measurement in millimeters to find out what your perfect fit is. Simply check it against the conversion chart now!

Keeping It a Secret?

If you’re shopping for a Valentine’s Day Gift or covering the necessity of a wedding ring, what do you do?

It ruins all the fun and surprise when you ask your loved one. But you can never ask friends and family if they know the person’s ring size and ruin a surprise, too!


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The easiest thing is to get hold of another ring that you’ve seen them wear. Lay the ring straight across the ring and use a ruler to measure inside the ring. Distance from one inner point to the other is referred to as diameter.


Another way of finding the ring size of your partner is by laying the existing ring over a printable ring size chart.


If you don’t have a different way of knowing their exact size, you can choose to pick a larger size and you will have it resized later on.

U.S. Ring Size Chart

Here’s a basic ring size chart that converts millimeters into ring sizes from the US and Canada:

Millimeters  –  Ring Size

  • 13.67  – 2 ½

  • 13.87  –  2 ¾

  • 14.07  – 2 ⅞

  • 14.27  – 3

  • 14.38  – 3 ⅛

  • 14.48  – 3 ¼

  • 14.58  – 3 ⅜

  • 14.68  – 3 ½

  • 14.88  – 3 ¾

  • 15.09  – 4

  • 15.29  – 4 ¼

  • 15.39  – 4 ½

  • 15.49  – 4 ¾

  • 15.6   – 4 ⅞

  • 15.7  – 5

  • 15.9  – 5 ¼

  • 16   – 5 ⅜

  • 16.1  – 5 ½

  • 16.31  – 5 ¾

  • 16. 41  – 5 ⅞

  • 16.31  – 5 ¾

  • 16.51  – 6

  • 16.51  – 6

  • 16.71  – 6 ¼

  • 16.92  – 6 ½

  • 17.12  – 6 ¾

  • 17.32  – 7

  • 17.53  – 7 ¼

  • 17.73  – 7 ¾

  • 18.14  – 8

  • 18.34  – 8 ¼

  • 18.54  – 8 ½

  • 18.65  – 8 ⅝

  • 18.75  – 8 ¾

  • 18.85  – 8 ⅞

  • 18.95  – 9

  • 19.05  – 9 ⅛

  • 19.15  – 9 ¼

  • 19.25  – 9 ⅜

  • 19.35  – 9 ½

  • 19.46  – 9 ⅝

  • 19.56  – 9 ⅗

  • 19.66  – 9 ⅞

  • 19.76  – 1

Getting Your Ring Resized

However, make sure you get your ring resized by an expert jeweler if you genuinely need to. The best place to turn to is the establishment that made the ring.


In the end what you can’t trust is the general average and you can’t trust that that ring is the ring that’s going to be the right fit for you. After all, you’re not exactly average!If the Ring Fits, Wear It!


READ MORE :: Custom Ring Size Chart | How to Size Your Finger


What Ring Size Am I? 

WHAT DO RING SIZE NUMBERS MEAN?

US and Canadian Ring sizes come in size 3 to size 15, half sizes and quarter sizes available up through and including. These numbers are also connected to the inside diameter or circumference of the band on the ring. 

It could be as little as 1 mm of the difference between a nail biting tight ring and one that simply if not uncomfortable is too tight. A ½ size adjustment can be very noticeable in respect to comfort. Wondering what ring size fit you’re going for? 

HOW DO RING SIZES WORK?

With standardized ring sizes, you can shop for rings at any jeweler. A 6 (16.4 mm diameter) is by far the most popular woman's ring size and a 9 (19 mm diameter) is the most popular men's ring size. Importantly, each finger is a different size and your finger sizes will be different from hand to hand!

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ARE RING SIZES UNIVERSAL?

How to Measure Your Ring Size from Home?

1. PURCHASE A RING SIZER ONLINE


Find out your ring size to within a quarter of a size - No venturing to the jewelry stores or second guessing! There are two standard types of ring sizers:

Multi-ring sizer: 

On these ring sizers there will be dozens of plastic rings on a central loop. Just try the rings on until you find which rings fit you best to use. A ring that fits perfectly will easily slide over your knuckle, and be close enough to grip snug enough to not spin. It should take a little bit of wiggle or move to be able to get it over the knuckle.

Sliding belt ring sizer: 

These look like a belt with all the different sizes all typed on the outside. How to use: Place the sizer over your finger and work the raised plastic notch until the size fits very tightly against the tip of your finger. 

2. SO WHY MEASURE YOUR RING SIZE WITH STRING ?

  • Wrap string or ribbon around your finger where a ring would, or should, be.

  • Place a notch where the string or ribbon meet. 

Divide it by 3.14 (yes, pi) and that’s your diameter.

Ring Size Chart

Heck, there’s not just one, but three ways to use our printable ring size chart above to start measuring your ring size at home. Try one or all three to ensure your perfect fit:

1. Use a ring you already have

Go to your jewelry box and grab a ring that you have already. The Inside Diameter of a Ring that fits on your left hand at the fourth finger ring size is the basis for this method. You basically should choose a ring that you wear on your left ring finger (or whatever finger you are going to be wearing the engagement ring) for the most accurate sizing.

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Can I get my ring made bigger or smaller?

We don't offer this service, because the types of metals and a few finishes used in our voodoo crafting process don’t allow for those types of alterations in the same way. Typically we find that if you follow our tips then you shouldn’t have any problems with the size of your piece, however our Sales and Design Team is always on hand to help if there are any queries you have.

Ring Size Guide

US,

Canada

IRE, UK, AUS

Inside Diameter (mm)

Circumference (mm)

3

F

14.1

44.2

3.5

G

14.5

45.4

4

H

14.9

46.7

4.5

I

15.3

48

5

J

15.7

49.3

5.5

K

16.1

50.6

6

L

16.5

51.9

6.5

M

16.9

53.2

7

N

17.3

54.5

7.5

O

17.7

55.8

8

P

18.2

57.2

8.5

Q

18.5

58.2

9

R

18.9

59.3

9.5

S

19.4

61

10

T

19.8

62.3

10.5

U

20.2

63.5

11

V

20.7

65

11.5

W

21.1

66.2

12

X

21.5

67.5

12.5

Y

21.9

68.8

13

Z

22.3

70.2

14

Z + 2

22.7

71.3


In the United States, ring sizes follow a number (and half number) scale usually from ring size 3 to 13.5 for adults. Those units match your finger's width in millimeters: A ring size 3 is a ring that fits a ring finger (with any finger), and it goes up from there. Every half size standard ring goes from 0.4 millimeters larger. That being said, a size 3 ring is 14 mm, a size 3.5 ring is 14.4 mm, and a size 4 is 14.8mm.

Women's rings tend to be 14.2 (between sizes 3 (3 mm) and 9 (9 mm)), while men's rings are between 16.8 (8 (8 mm) and 21.1 (14 mm)).

 


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