Ring Size Guide: How to Determine Ring Size

How to Measure Ring Size

Have you ever wondered, "What is my ring size?" and realized you don't know how to measure it or even what the official ring size measurements are?   

It's not uncommon for people to be completely unaware of their ring size. After all, trying on a couple of sizes before finding the perfect one is easy at a jewelry store. But do you know how to determine ring size when you shop online?  

Follow this handy ring size guide to measure your finger so you can start adding to your jewelry collection.

What Size Ring Do I Wear?

Your local jeweler may know several ways to measure your finger using simple tools, but do you know how to figure out ring size at home?  Here are a few ways to go about it.

Use a Ring Sizer

Ring measurement tools aren't expensive, and getting one is probably the easiest way to approach the matter. You can order one online and have it delivered, so you never even need to leave your home.   

There are many options to choose from online, and they’re usually affordable. Keep in mind that the ring sizers with the best reviews fall into two categories: a keyring and a measuring tape.

We normally suggest this plastic sizer on Amazon for ~$4.00 USD and free shipping.

Use Floss or String

As affordable as a ring sizer may be, it still costs money and takes time for delivery. If you need to know how to measure ring size quickly or you don’t want to spend any money at all, using floss or string is one of the easiest ways to do it. We would generally do not recommend measuring the mm of your finger with this method since a string would never sufficiently mimic the tension of metal and you may end up with a ring that is too large or small.

Floss is a common item in most households, and it's a decent ring measuring tool to get a ballpark number. All you need to do is wrap a piece around your finger and use a pen to mark the spot where the floss overlaps. Then, use a ruler to measure its length in millimeters.

Use a Ring Size Chart

If you've ever wondered how to measure a finger for ring sizes using a size chart, know that you should start with finding an appropriate, printable file. This measuring method is based on measuring your left hand's ring finger (the one next to your pinky).   

You can find many charts on the internet, such as Catbird's international ring size chart. It's free to download and print.   

Always make sure to print its actual size when you select your printing options. Once printed, place a ring or floss, string, or paper over the chart and find a circle that best matches in size.   

The inner edges of the ring should line up with the correspondent circle from the chart.   

However, keep in mind that many people's knuckles differ significantly from the finger below them. If that's the case with your fingers, make sure to measure your knuckle, too. Then, use a ring size from the chart that falls in between those two measurements.

Use Paper

You can measure your ring size using any piece of paper. (Again, like the floss/string method, this is not recommended.) Start by cutting a ¾ inch wide strip and make it at least four inches long. Wrap the strip around your finger, just as you would with floss or string, and use a pen to mark the overlapping point.   

Use a ruler to measure the length of the paper in millimeters – this will be the circumference of your finger. You can then use the measurement to find your corresponding size using a ring size chart.

Ring Size Guide: FAQS

  • How to Find Ring Size Using a Ring I Own? 
  • The simplest way of measuring your ring size is by using a ring you already know fits you well. Use a ruler to measure your ring's diameter and then find that measurement on the chart to discover your corresponding size.   

  • What Time of the Day is Best to Measure? 
  • Since your finger's thickness varies significantly over the course of an entire day, you should measure your ring size in the evenings. Make sure you do it at room temperature as well.   

  • How to Prepare for Ring Size Measurement? 
  • Before you start, you should first pick the finger that would be perfect for that new ring. Always keep in mind that the fingers on your dominant hand are usually thicker than those on your non-dominant hand. Also, make sure your finger is in its normal condition before you measure. Cold can cause fingers to shrink, while hot weather and certain medications may cause swelling.

    Find Your Perfect Moissanite Ring at Gema & Co

    Each measuring method is fast and convenient. After you learn how easy it is to measure your finger, shopping online for gorgeous jewelry will be a piece of cake. Browse Gema & Co’s unique collection of moissanite jewelry and find something that you love today!

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