Ring Size in cm: Simple Ways to Measure Your Finger

Finding the Perfect Fit: A Guide to Ring Sizing in Centimeters

Rings often have sentimental value. Whether it’s a wedding band, a gift, or a piece you bought for yourself, rings are more than just accessories. Because we wear them so often, it’s important that they fit well. If your ring is too loose, it’s easy to lose. If it’s too tight, it’s uncomfortable and may even require costly resizing.

This guide will walk you through how to accurately measure your ring size in centimeters. We’ll explore at-home measurement techniques, how to understand ring size charts, and other factors that influence ring size.

Understanding Ring Size Terminology

Before we dive into how to figure out your ring size, let’s get clear on some of the terms we’ll be using.

The Basics: Circumference and Diameter

When sizing a ring, two measurements are key:

  • Circumference: This is the distance around your finger. It’s the most important measurement for figuring out your ring size.
  • Diameter: This is the distance across the inside of the ring.

Units of Measurement: Centimeters, Millimeters, and US Sizes

This guide will focus on measuring your ring size in centimeters (cm) and then converting that measurement to other sizing systems. Keep in mind that:

  • 1 centimeter (cm) = 10 millimeters (mm). Knowing this relationship can help you get a more precise measurement.
  • Many people in the US are familiar with the US ring size system (e.g., size 6, size 7). We’ll show you how centimeter measurements correlate to US ring sizes.

Measuring Your Ring Size at Home: The DIY Approach

No ring sizer handy? No problem. Here are a few ways to get a decent estimate of your ring size using things you probably have lying around the house.

The String Method

  1. Grab a piece of string and wrap it snugly around the base of your finger.
  2. Mark the spot where the string overlaps. Make sure the fit feels comfortable. You don’t want the ring to be too tight.
  3. Use a ruler to measure the length of the string in centimeters.
  4. Make sure the length of string you’ve measured will slide easily over your knuckle.

The Paper Method

  1. Cut a thin strip of paper and wrap it around your finger.
  2. Mark the spot where the paper strip overlaps.
  3. Measure the length of the paper strip in centimeters.
  4. Make sure the paper isn’t too tight or too loose. You want the measurement to be as accurate as possible.

Using a Printable Ring Sizer

  1. Look online for a printable ring sizer. Many jewelers offer them on their websites.
  2. Print the sizer, making sure the scale is set to 100%. Assemble it according to the instructions.
  3. Slide the sizer onto your finger and adjust it until you find the best fit.

Converting Centimeters to Ring Sizes

Once you’ve measured your finger in centimeters, you can use a ring size chart to find the corresponding ring size. Here’s how:

Understanding Ring Size Charts

  • Find a reliable chart. Search online for ring size conversion charts. Look for one that includes measurements in centimeters, as well as ring sizes in US, UK, and European sizes.
  • Match your measurement. Look for your centimeter measurement on the chart. The chart will show you the corresponding ring size.
  • Consider international sizes. Ring sizes vary from country to country, so it’s helpful to know that a size 6 in the US might be a size L in the UK, for example.

Factors Affecting Ring Size

Keep in mind that a number of factors can affect your ring size:

  • Time of day. Your fingers can change size throughout the day.
  • Temperature. Hot weather can cause your fingers to swell, while cold weather can cause them to shrink.
  • Activity level. Fingers tend to swell when you exercise or do other activities.
  • Weight fluctuations. Changes in weight can affect your ring size.

Professional Ring Sizing Options

While the DIY methods mentioned above can get you close, for the most accurate measurement, consider these professional options:

Visiting a Jeweler

Jewelers use specialized tools to measure your finger precisely. It’s a good idea to get sized at a few different jewelers, as their methods may vary slightly.

Using a Ring Sizer Tool

These tools come in a few different forms, including plastic strips, metal ring sizers (a set of rings in different sizes), and mandrel sizers (a cone-shaped tool marked with ring sizes).

To use a ring sizer, simply slide rings onto the sizer until you find the one that fits comfortably. Ring sizers can be purchased online or at jewelry supply stores.

What to do if you’re between sizes

It’s not unusual to find that your measurement puts you in between standard ring sizes.

If that happens, most experts recommend ordering the larger size. A slightly larger ring is usually more comfortable than one that’s too snug.

Keep in mind, too, that a jeweler can often resize a ring to achieve a perfect fit. This is a common service, so don’t hesitate to ask about it.

Frequently Asked Questions

What ring size is a 6 cm finger?

A finger circumference of 6 cm (60 mm) typically corresponds to a ring size of approximately 9.5 in US sizes. However, ring sizes can vary slightly between jewelers, so it’s always best to double-check with a ring size chart specific to the brand you’re purchasing from. Remember that this is just an approximation, and it’s crucial to measure accurately or get professionally sized for the best fit.

How do I know my ring size in cm?

The most accurate way to determine your ring size in cm is to measure the circumference of your finger using a flexible measuring tape or a piece of string. Wrap the tape or string around the base of the finger where you’ll wear the ring, mark the point where it overlaps, and then measure the length in centimeters. This measurement represents your finger’s circumference. You can then use a ring size chart to convert this circumference measurement into a corresponding ring size. Online ring size charts can be easily found with a quick search.

You can also measure the inside diameter of an existing ring that fits comfortably. Place the ring on a ruler and measure the diameter across the widest point inside the ring. Convert this diameter measurement into centimeters if needed, and then use a ring size chart to find the corresponding ring size.

Final Thoughts

Whether you use a piece of string, a strip of paper, or a dedicated ring sizer, you can find your approximate ring size in centimeters from the comfort of your home.

Getting the right size is essential for a ring that’s comfortable and secure. You don’t want it to be so tight it’s painful or so loose it falls off!

Keep in mind that your fingers can swell or shrink depending on the temperature and time of day. If you’re unsure, it’s always a good idea to consult a jeweler. Once you’ve found the perfect fit, you can confidently enjoy your beautiful new ring.