How To Measure Your Ring Size | Capucelli

How To Measure Your Ring Size from Capucelli

Whether you’re preparing for that big engagement or just for casuals, you need to take out the guesswork out of finding the right ring size.


At Capucelli, our jewelry experts have compiled this complete ring size guide so you can find engagement rings, wedding rings, or rings for just casuals that are a perfect fit. As a rule of thumb, your ring should fit your finger comfortably—snug enough so that it will not fall off, but loose enough to slide over your knuckle with some resistance.

Two things to consider

Before we go into the details of how you can measure your ring size:

Consider Your Knuckle

This is often overlooked. Here are a few things to keep in mind when measuring your ring size with your knuckle:

  • Measure at the widest point of your knuckle: Use a soft measuring tape to measure the circumference of your finger at the widest point of your knuckle. This will ensure that you know the exact dimension of the ring that will comfortably fit over your knuckle and won't slip off your finger.
  • Consider the shape of your knuckle: Some people have knuckles that are larger than the base of their fingers, while others have knuckles that are roughly the same size as their fingers. If you have a larger knuckle, you may need to choose a ring that is slightly larger than your measured size to ensure a comfortable fit.
  • Think about the style of the ring: The style of the ring can also affect how it fits over your knuckle. For example, a ring with a wider band may be more difficult to slide over a large knuckle than a ring with a narrower band.

Ensure accuracy with multiple tries

Sometimes, your ring’s fitting may be affected by temperature. It is important to try measuring your ring size three to four different times because the size fluctuates depending on temperature: It can be smaller the colder you are and more swollen if you're overheated.

Explore The Three Major Ring Measurement Methods


Option 1: Use String or Floss to measure your finger

Using string or floss to measure your finger for a ring is a simple and effective method. Here are the steps to follow:

  • Cut a piece of string or floss: Use a piece of string or floss that is at least 6 inches long. It's better to have too much string than too little.
  • Wrap the string around your finger: Wrap the string or floss around the base of your finger where you want to wear the ring. Make sure it's snug but not too tight, and hold the string in place with your other hand.

Explore The Three Major Ring Measurement Methods


  • Mark the string: Use a pen or marker to mark where the string overlaps. This is the measurement of your finger circumference.



  • Measure the string: Use a ruler or measuring tape to measure the length of the string from the end to the mark you made. This measurement is your ring size.
  • Compare your measurement to a ring size chart: Use a ring size chart to determine your ring size based on the measurement you took. Be sure to choose a chart that corresponds to the measurement units you used (e.g. inches, millimeters).
How To Measure Your Ring Size from Capucelli


A common ring size chart for instance uses: 3 (14 mm), a size 3.5 ring is 14.4 mm, and a size 4 is 14.8mm. The most common ring sizes for women are 6 (16.5 mm), 6.5 (16.9mm), and 7 (17.3 mm), while the most common men's sizes are 10 (19.8mm), 10.5 (20.2 mm), and 11 (20.6 mm)


NOTE: Using string or floss to measure your finger is an easy and convenient way to determine your ring size. However, keep in mind that the fit of a ring may vary depending on the width and style of the band. It's always a good idea to try on a ring before purchasing to ensure a comfortable fit.

Option 2: Place a ring you already own on a ring size chart

Place a ring you already own on a ring size chart


  1. Look for a ring that fits you wel
  2. Print out a true-to-size ring size chart, and place your ring on the circles until you find the one that matches up with the inside circumference of your ring. That is your ring size. Remember to repeat these under different temperature conditions, morning, afternoon, and evening.



Option 3: Buy your own ring sizer

If you desire a very accurate measurement, you can purchase your own ring-measurement tool. You can use a thin measuring tape or a keyring lined with a gradient of ring sizes.