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Ring Size Chart & Guide

The right fit makes all the difference when you buy a ring, helping you avoid discomfort and the hassle of a return. This ring size guide covers a detailed ring size chart in mm along with simple at-home measuring methods to help you find your perfect fit.

A ring that fits well should slide over your knuckle with light resistance and sit comfortably at the base of your finger without feeling loose or tight. Use the ring size chart below to compare your measurements and find your exact size before placing an order.

What Is a Ring Size?

A ring size is a number that represents the inner measurement of a ring, expressed either as a diameter or a circumference in millimeters. In the United States ring sizes typically range from size 3 to size 13 in whole and half sizes. A ring size chart helps you compare these measurements against a standard scale.

Two measurements matter most when reading a ring size chart:

• Diameter is the distance across the inside of the ring measured in a straight line from one edge to the other.

• Circumference is the total distance around the inside edge of the ring.

Most ring size charts list both values so you can match your measurement using whichever method is easier for you. Once you understand these two numbers, reading any ring size chart becomes simple. There are many moissanite diamond benefits so getting the size right matters just as much as choosing the stone.

US Ring Size Chart (Diameter & Circumference in MM)

This US ring size chart shows each size with its inside diameter and inside circumference in mm. To use it measure the inside diameter of a ring that already fits well then match it to the closest value in the table below.

If your measurement falls between two sizes, choosing the larger size is usually a safer option for everyday comfort.

International Ring Size Conversion Chart

If you live outside the United States or need to convert your size, this finger ring size chart will help you find the matching value across US, UK, European and Asian sizing systems.Ring sizing systems vary by country. This conversion chart is useful if your ring was purchased abroad or if you are shopping for someone who lives in another part of the world.

How to Measure Your Ring Size at Home

If you cannot visit a jeweler right away, you can still get a reliable estimate using simple tools at home. Each of the three methods below is easy to follow and works well with the ring size chart above.

Method 1: String or Paper Strip Method

This method uses a piece of string or a thin strip of paper to measure the circumference of your finger.

1. Wrap the string or paper strip snugly around the base of your finger, just below the knuckle.

2. Mark the point where the string or paper overlaps with a pen.

3. Lay the string or paper flat and measure the length in millimeters using a ruler.

4. Match this circumference measurement to the closest value on the ring size chart above.

For the most accurate result, measure your finger two or three times and take the average. Avoid measuring when your hands are cold or when your fingers are swollen from heat, exercise or salty food.

Method 2: Measure an Existing Ring

If you already own a ring that fits the same finger comfortably, you can measure it directly instead of measuring your finger.

1. Place the ring on a flat surface.

2. Use a ruler to measure the inside diameter of the ring from edge to edge in millimeters.

3. Match this diameter measurement to the closest value on the US ring size chart above.

4. If the ring has a wide band, keep in mind that wider bands often fit more snugly so you may need to round up slightly.

This method works well if you are buying a ring as a gift and want to confirm the size before placing your order.

Method 3: Printable Ring Size Chart

A printable ring size chart lets you measure your finger directly against a printed template at home.

1. Download and print the ring size chart at 100% scale with no scaling adjustments in your printer settings.

2. Cut out the circles or sizing guide on the printed page.

3. Place your finger through each circle, starting from the smallest, until you find one that fits comfortably.

4. Note the corresponding size listed next to that circle.

Always check your printed result against the digital ring size chart on this page to confirm accuracy since printer settings can sometimes affect the final size of the template.

Tips for Accurate Ring Sizing

A few small adjustments can make a big difference in getting your measurement right the first time.

• Measure at the right time of day. Fingers tend to be slightly larger in the afternoon and evening, so measure during these hours for the most realistic size.

• Avoid extreme temperatures. Cold weather can cause fingers to shrink slightly, while heat and humidity can cause them to swell. Measure at a normal room temperature for the best result.

• Measure the correct finger. Ring size can vary slightly between your left and right hand and even between fingers on the same hand, so always measure the finger you plan to wear the ring on.

• Account for the band width. Wider bands tend to fit more snugly than thinner bands. If you are choosing a wide design, consider sizing up by half a size.

• Measure more than once. Take your measurement two or three times on different days for a more reliable average.

• When in doubt, size up slightly. A ring that is a touch loose can be resized down more easily than one that is too tight.

Following these tips alongside the ring size chart above will help you land on the correct size with far fewer surprises. Keeping a ring size chart handy makes future purchases even easier.

What If You're Buying as a Surprise?

Buying a ring as a surprise especially for a proposal, comes with its own challenges since you cannot simply ask the recipient for their size. The good news is there are a few discreet ways to get a close estimate.

Ask a close family member or friend who might already know the recipient's ring size, then check that number against the chart on this page. Many people are happy to help you pick out Moissanite Engagement Rings without giving away the surprise.

If you can borrow one of the recipient's existing rings, even briefly you can measure its inside diameter using Method 2 above and compare it to the ring size chart. Just be sure to return the ring before it is missed.

If you are unsure between two sizes choosing the slightly larger one is generally the safer option. A ring that runs a little large is easier to adjust than one that is too tight, and our resizing policy below makes that process simple.

Venust Diamonds Ring Resizing Policy

Our commitment to you extends beyond delivery. Here's what's included with your purchase:

• Free first resize: Most designs can be resized once free of charge so you only pay the US$100 return shipping cost.

• Made to order: Most of our Moissanite Wedding Bands and rings are crafted to order so confirming your size with the ring size chart above helps ensure the best fit from day one.

• Easy process: If you need a different size, contact us to begin the resize process. We'll confirm the new size with you before adjusting your ring, subject to certain design restrictions.

FAQs

What is the most accurate way to measure my ring size?

Visiting a jeweler for a professional measurement is the most accurate option. If that is not possible, measuring an existing ring using the diameter method tends to be more reliable than the string method, since string and paper can stretch or shrink.

How do I find my ring size in mm?

To find your ring size in mm, measure either the inside diameter or the inside circumference of a ring that fits well, or wrap a strip of paper around your finger and measure its length. Then match that number to the closest value on the ring size chart on this page.

Can my ring size change over time?

Yes, ring size can change due to factors like weight changes, age, temperature and even time of day. It is a good idea to measure your finger again before ordering a new ring, even if you already know your size from a previous purchase.

Should I round up or down if my measurement falls between two sizes?

If your measurement falls between two sizes, it is generally better to round up slightly since a ring that is a little loose is easier to resize than one that feels too tight, especially for daily wear pieces like wedding bands.

How do I convert my ring size to an international size?

To convert your ring size to an international size, find your current size in the international ring size conversion chart on this page and read across the row to see the matching size for the US, UK, Europe or Asia.