Shopping for the perfect diamond ring isn’t always easy – from choosing the perfect cut to picking out a unique design that truly reflects your style, especially online shopping. But the biggest challenge of all is how to measure ring size. Understanding how to measure a finger for a ring is important for finding the best fit possible, and thankfully, with our simple guide on measuring ring sizes at home, it can be easier than ever! Whether you’re trying to get sized up in-store or prefer doing it yourself from home, this article will explain exactly what you need to do to find (or gift!) a correct ring size. Here, you will learn to size your ring with ring size chart and a ruler to get the ideal piece of jewelry—a gift for yourself or an engagement ring.
What You Need to Measure Ring Size
All you need to measure your ring size at home is a flexible measuring tape, a pen, and a piece of paper. If you don’t have a flexible measuring tape, you can use a string or a strip of paper. Just make sure that whatever you use is flexible so that it can accurately wrap around your finger.
Different Ways to Measure Ring Size
There are two options to find out your ring size:
1 – Use a Ring to Find Your Correct Ring Size
To find your ring size, please download and print the conversion chart page. Please make sure the “Scale to fit” option is unchecked in the print dialogue box. Use a ruler to check that the scale corresponds to the scale on the page.
Have a ring ready that you wear on the same finger as the H.B. Finest ring you have selected. Engagement rings are traditionally worn on the ring finger of the left hand.
- Position the ring over the circles until you find the one that matches up with the inside circumference of your ring.
- The diameter should correspond exactly to the diameter of your ring.
- Please note that H.B. Finest uses European sizing, the number in gold corresponds to that specific size.
Download this guide here

2 – Use Ring Size Chart to Measure Your Finger
First, measure your finger. Make sure that the chosen size leaves enough room for the ring to pass easily along the entire length of the finger.
- Please have a tape measure handy or download the H.B. Finest tape measure.
- Before printing the tape measure, make sure the “Scale to fit” option is unchecked in the print dialogue box.
- Wrap the tape measure around your finger, note the measurement, and consult the H.B. Finest ring size table to determine your ring size.
- Please note for your order that H.B. Finest uses European sizing, which you can also find in the ring size table.
Important Tips When You Measure Ring Size
- If you are hesitating between two sizes, choose the larger one.
- Finger size changes depending on the time of the day and the weather. For best results measure your finger size at the end of the day. Do not measure your finger when it is hot or cold.
With this simple method, measuring your ring size at home is easy and accurate!
*This is for REFERENCE only. H.B. Finest cannot be held responsible for any errors that occur as a result of using this ring size chart.
We are always here to help you.
Still got questions? Contact us!

What is the difference between ring size and circumference?
Ring size is a standardized measurement, while the circumference is the actual measurement of your finger. In other words, ring size is what you use to determine what size ring to buy, while the circumference is how you actually measure your finger.
To measure the circumference of a finger, wrap a thin piece of string (or even dental floss) around the base of the ring finger and mark it with a pen. You can then lay the marked string out against a ruler, measuring in millimeters, which will enable you to measure the ring finger circumference.
What is the difference between US and international ring sizes?
Ring sizes in the US are measured using a numerical scale with half sizes, while international ring sizes are measured using different systems such as an alphabetical scale in the UK and Europe, a numerical scale similar to the US system in Canada, and a numerical scale with half sizes in Japan. It is important to have your finger measured by a professional jeweler to ensure that you get the correct size, as ring sizes can vary slightly between countries and measuring systems.
What if it is still the wrong size and it doesn't fit?
If you have received a ring that does not fit correctly, please contact us to request a replacement or exchange. We have policies in place to accommodate customers who have received the wrong size or a defective product. In order to process a replacement or exchange, we will ask you to return the original item to us. Please be sure to provide proof of purchase and to follow the specific instructions for returning the item that we will provide to you.
Can my ring size change over time?
Yes, your ring size can change due to a variety of factors, such as weight gain or loss, pregnancy, age, and health conditions. It’s a good idea to measure your finger regularly to ensure that your ring fits well.
Can I resize my ring if it's too big or small?
In most cases, rings can be resized by a jeweler. However, some rings cannot be resized due to the design or the materials used. It’s a good idea to speak with a jeweler about the feasibility of resizing your specific ring.
Can I wear a ring on any finger?
You can wear a ring on any finger you choose. Some people have a preferred finger for certain types of rings, such as wedding bands or engagement rings, but ultimately it’s a matter of personal preference.
Is it better to size a ring up or down?
It’s generally better to size a ring up rather than down, as it is easier to make a ring larger than it is to make it smaller. If a ring is too small, it can be uncomfortable to wear and may cause circulation issues. On the other hand, if a ring is too large, it can be resized or adjusted with a ring guard or sizing beads.
Can different countries have different ring-size measurements?
Yes, different countries can have different ring-size measurements. In the United States, ring size is generally measured in whole and half sizes using a numerical scale. In other countries, such as the United Kingdom, ring size is measured using a letter scale. It’s important to be aware of these differences when buying a ring online or in a foreign country.