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Ring Size Chart: How To Measure Ring Size

We've made measuring your ring size at home easy with our free ring sizer, printable ring size chart, and step-by-step methods to help you find the perfect fit.

Ring Size Chart: How To Measure Ring Size

We've made measuring your ring size at home easy with our free ring sizer, printable ring size chart, and step-by-step methods to help you find the perfect fit.

How to Measure Ring Size at Home

The three easiest ways to measure your ring size without our free sizer are:   

  • The string method   
  • Using a printable ring sizer   
  • Measuring an existing ring to determine a size that already fits   

These methods require our Ring Sizer & Conversion Chart. To print the chart for methods two or three, set page scaling to "100" in your print settings and use 8.5 x 11-inch standard paper.

Method One: Create Your Own Ring Sizer

What you'll need:   

  • Printer & paper    
  • String, yarn, floss, or a thin strip of paper    
  • Pen or marker    
  • Ruler  

Steps:   

1. Cut a piece of string, yarn, floss, or thin strip of paper to at least three inches long.   

2. Wrap one end of the string around the base of the intended finger.

3. Using a pen or marker, mark where the end of the string overlaps with the rest.

4. Lay the string flat and use a ruler to measure the length between the end and your mark in millimeters.

5. Use the Ring Size Conversion Chart to match the millimeter length to the corresponding ring size.

Method Two: Print a Ring Sizer

What you'll need:   

  • Printer & paper   
  • Scissors   

Steps:

1. Print the Printable Ring Sizer & Conversion Chart. Set page scaling to "100" in your print settings and use 8.5 x 11-inch standard paper.

2. Cut out the ring sizer and the slot as instructed. 

3. Wrap the paper ring sizer snuggly around the base of the intended finger so that the numbers are visible and insert the pointed end through the slit you made in the sizer.

4. Note the number that lines up with the slit; this is your ring size! Remember that quarter sizes are also available if your sizer indicates that you are between whole and half sizes. 

Method Three: Measure an Existing Ring with Our Chart

What you'll need:   

  • Printer & paper   
  • Scissors   
  • An existing ring 

Steps:

1. Print the Printable Ring Sizer & Conversion Chart. Set page scaling to "100" in your print settings and use 8.5 x 11-inch standard paper.

2. Choose a ring that correctly fits the intended finger.

3. Lay the ring over each size circle within the chart until you can closely match the inside edge to one of the circles on the guide. If the ring falls between two sizes, contact us to order the quarter size between them.

Ring Size Chart

All of our rings are crafted in standard US sizes. View the chart below to see how US sizes map to finger circumference and convert to international sizes. Engagement rings, wedding bands, and fashion rings all follow the same size format.

Circumference mm Diameter mm Ring size Ring size EU Ring size UK Ring size USA
37.812.041238A0.5
39.112.4512.539B1
40.412.851340C1.5
41.713.3613.542D2
42.913.6713.543E2.5
44.214.071444F3
45.514.4814.545G3.5
46.814.881547H4
4815.291548I4.5
48.715.4915.549J5
5015.91650K5.5
51.216.311651L6
52.516.7116.552M6.5
53.817.121754N7
55.117.5317.555O7.5
56.317.931856P8
57.618.341858Q8.5
58.918.7518.559R9
60.219.151960S9.5
61.419.5619.561T10
62.719.962063U10.5
6420.372064V11
65.320.7820.565W11.5
66.621.182167X12
67.821.5921.568Y12.5
68.521.792267Z13

Ring measuring tips and tricks

Here are our top ticks and tricks to remember when measuring ring size.

  • Temperature

    Hot temperatures expand the skin while cold temperatures shrink the skin. So it is a good idea to consider this before measuring.

  • Weight loss or gain

    Any weight changes will impact how loose or tight the ring will fit.

  • Easy Exchange

    Add product features or answer common questions about your products.

  • Time

    The best time of day to measure ring size is in the evening as the fingers are bigger in the evening when compared to the morning.

Are There Any Types of Rings That Can't Be Resized?

Yes. Certain rings, such as eternity and open bands, and alternative metal styles aren't eligible for resizing due to the structure or material of their designs. If your ring cannot be resized, we'll include that information on the product detail page of your specific style. You may also exchange a ring that cannot be resized within our 30-day free exchange period.

The Altered Carbon Free 30-Day Exchanges & 60-Day Resizes

Our commitment to you extends beyond delivery, and we're proud to offer free 30-day exchanges and free 60-day resizes to ensure that you can find the perfect fit. Most designs (even an eternity, open, or alternative metal style) can be exchanged for a new size within 30 days free of charge, while any resizable design can be resized within 60 days free of charge. To learn more about these policies, consult our Free 30-Day Returns & 60-Day Resizes page. 

Ring Size Tips

  • Our dominant hands are generally slightly larger – measure the hand you plan to wear the ring on.    

  • Consider the design of your ring. Rings with wider bands will fit tighter. Plan to size up by at least a half size for chunky bands (>4mm) and size down accordingly for very thin designs (<1.3mm). Note that ring sizes are generally measured in millimeters (mm) and are not sized by inch.   
  • Ensure your body temperature is normal – fingers tend to shrink when cold and expand when hot.   

  • Fingers change size throughout the day based on the water we drink and the food we eat – the best time to measure is towards the middle or end of the day.  

  • If your knuckle is pronounced, you may want to measure both the knuckle and the base of the finger. Then, choose a size in between those measurements as rings need to fit over the knuckle but not be too loose or tight to wear comfortably.   

Ring Size FAQs

What if i order wrong ring size?

If you order the wrong size, contact us to begin the complimentary resize process within 60 days of when your piece was initially shipped out to you or first available for pick up in the showroom. We'll confirm a new size with you and resize your ring free of charge. If you ordered an eternity ring, open band or alternative metal design, you may resize it within the 60-day resize policy. Outside of the 60-day resize policy, these ring styles cannot be resized due to their design. They may also be exchanged for the correct size within our 30-day policy. To learn more about these policies and their constraints, consult our Free 30-Day Returns & 60-Day Resizes page.

What happens when my ring is resized?

To resize your ring to the perfect fit, our jewelers will add or remove a small strip of metal from the back of the band and solder it back together – you won't be able to tell it's been resized.

What is the average ring size for women?

The average ring size for women is between size 5 and 7, though this can vary greatly.

What is the average ring size for men?

The average ring size for men is between 8 and 10. Use our printable chart or order a free ring sizer to determine the perfect size.  

How do you secretly get ring size?

If you need to know your partner's ring size without them knowing, selecting a standard size or slightly larger size is the best choice. The average size for women's rings is 6, and for men's rings 9. You can also try measuring a ring they already wear or asking a friend or family member if they know their size. Whichever method you go with, always double-check the product detail page to confirm that your specific design can be resized to ensure you can eventually find the perfect fit.

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