How Many mm is a Size 8 Ring? – Your Ultimate Guide to Measuring Ring Sizes at Home

Mariah Brown

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Mariah Brown

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Do you have a beautiful ring that you adore, but it just doesn’t fit perfectly? Maybe you are unsure about the size and want to order a new ring online, but you’re hesitant because you don’t know how many millimeters (mm) is a size 8 ring. Don’t worry! We’ve got you covered. In this comprehensive guide, we will help you measure your ring size at home, so you can confidently shop for rings online or find the perfect fit for your favorite jewelry.

First things first, measuring your ring size doesn’t have to be a daunting task. With the right tools and tips, you can easily determine your ring size from the comfort of your own home. Say goodbye to ill-fitting rings that slide off or feel too tight. Let’s dive into the world of ring sizes and discover how you can measure your finger accurately and with precision!

how many mm is a size 8 ring

Ring Size Conversion Chart

Before we begin measuring your ring size at home, let’s familiarize ourselves with some commonly used ring size conversion charts. These charts will help you understand the equivalent millimeter measurement for each ring size. Here are four reliable sources and their corresponding conversion charts:

Carrera Casting Corp.

Carrera Casting Corp. provides a detailed ring size conversion chart, including sizes in both millimeters and inch measurements. Their chart is a valuable resource to reference when determining your ring size. It covers a wide range of sizes, ensuring you find the perfect fit. offers a comprehensive ring size conversion chart that includes sizes for different countries. Whether you’re from the United States, Canada, Australia, or the United Kingdom, their conversion chart has got you covered. Having access to different international ring size measurements ensures you can shop for rings from any part of the world.

International – Apres Jewelry

If you’re looking for a concise ring size conversion chart from different countries, Apres Jewelry’s chart is a fantastic resource. Their chart provides sizes in millimeters from the United States, Canada, the United Kingdom, and Australia. By referring to their chart, you can easily correlate your ring size to the millimeter measurement you need.

Kim Victoria Jewels

Kim Victoria Jewels’ ring size conversion chart offers a clear breakdown of sizes in millimeters. Their chart is specifically designed to help you understand the millimeter measurement for each ring size, ensuring you can confidently purchase rings that fit perfectly.

Methods to Measure Ring Size at Home

Now that you have familiarized yourself with the ring size conversion charts, let’s move on to the exciting part – measuring your ring size at home! We have gathered the best methods and guides from renowned jewelry experts to help you achieve accurate measurements for a perfect fit.

Rellery’s Guide

Rellery, a trusted brand known for their elegant and customized jewelry, provides a helpful guide to measuring your ring size at home. Their step-by-step instructions will walk you through the process, starting with finding an existing ring that fits comfortably, to measuring its inner diameter and comparing it to their chart. Rellery’s guide ensures precision and accuracy, giving you confidence in your ring size measurement.

Real Simple’s Guide

Real Simple, a popular lifestyle magazine, also offers a reliable guide to measuring your ring size at home. Their guide provides easy-to-follow instructions, including alternative methods for accurate measurement. Whether you have a ring that fits well or need to measure your finger directly, Real Simple’s guide has got you covered. With their tips and tricks, you’ll be able to determine your ring size with ease.

Commonly Asked Questions

1. How do I measure my ring size accurately at home?

When measuring your ring size at home, it’s important to ensure accuracy. Follow these steps for precise measurements:

  • Wrap a strip of paper or string around the base of your finger.
  • Mark where the paper or string overlaps and measure the length.
  • Compare the length to a ring size chart or use an online ring size calculator.

2. Are there any alternative methods to measure ring size?

Absolutely! If you don’t have a ring or prefer not to use one for measurement, you can try alternative methods:

  • Use a printable ring sizer available from reputable jewelry websites.
  • Visit a local jeweler and have them professionally measure your ring size.
  • Order a plastic ring sizer online, which contains multiple sizes for accurate measurement.

3. Can I determine my ring size using a ring sizing app?

Yes, ring sizing apps are a convenient option for measuring your ring size. These apps utilize augmented reality technology to determine your ring size based on a reference object, such as a credit card. However, it’s important to note that the accuracy may vary, so it’s best to consider them as a rough estimate and always cross-reference with a ring size chart or guide.

4. Is it better to have a slightly looser or tighter fit for a ring?

When it comes to ring size, it’s crucial to find a balance between comfort and security. A slightly looser fit allows for easy movement and prevents the ring from feeling excessively tight. On the other hand, a tighter fit ensures the ring doesn’t slip off accidentally. Ultimately, choose a fit that feels comfortable and secure, without being too loose or too tight.

5. Can my ring size change over time?

Yes, your ring size can change due to various factors, such as weight loss or gain, pregnancy, or changes in temperature and humidity. It’s important to measure your ring size periodically, especially if you haven’t worn rings for a while or experience noticeable changes in the fit of your current rings.

Importance of Accurate Ring Size Measurement

Accurate ring size measurement is crucial for a comfortable and secure fit. Wearing a ring that’s too tight can cause discomfort, restrict blood flow, and even lead to finger swelling. On the other hand, a loose ring may slip off or become lost. By determining your ring size accurately, you can avoid these inconveniences and enjoy wearing your favorite rings confidently.

Additional Resources for Ring Size Information

Measuring ring size can sometimes be tricky, especially if you’re unsure about the accuracy of your measurements. To help you further, we recommend exploring these additional resources for ring size information:

  • Visit your local jeweler and have them professionally measure your ring size.
  • Consult reputable jewelry websites that provide detailed guides and video tutorials on measuring ring sizes.
  • Reach out to customer support of online jewelry brands and ask for their assistance in determining your ring size.


Now that you have gained valuable insights into measuring your ring size at home, you can confidently shop for rings online or determine your perfect fit for existing jewelry. Remember to refer to reliable ring size conversion charts, such as the ones provided by Carrera Casting Corp.,, International – Apres Jewelry, and Kim Victoria Jewels. Utilize guides from Rellery and Real Simple to ensure accurate measurements. With the proper ring size, you can enjoy comfortable and stylish jewelry that fits like a dream. Now go ahead and find the perfect ring that complements your style and personality!

If you found this article helpful, be sure to check out our other engaging content on all things fashion and jewelry. Happy ring shopping!

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