How to Measure Ring Size

Learn how to measure your ring size with our step-by-step at-home sizing methods, expert tips, and FAQ to help you find the perfect fit with confidence. 

How to Measure Ring Size at Home

Method 1: Use a Free Ring Sizer

A physical ring sizer is the most reliable way to measure your ring size at home.

 

Request our free, unisex ring sizer to find your perfect fit. It's reusable and designed to mimic the feel of an actual ring, giving you a true sense of how each size sits on your hand.

 

Wrap the sizer around the finger you'd like to measure and adjust it to the size that feels right. The perfect size will be snug enough not to slip off but loose enough to slide over the knuckle without too much resistance. 

Method 2: Use a Printable Ring Sizer

If you need your ring size right away, download our printable ring sizer for a quick, at-home measurement. This option is helpful when you need a size fast, though we always recommend confirming with our free ring sizer or a Brilliant Earth showroom visit for the most accurate results.  
 

What you'll need:    

  • Printer 
  • 8.5 x 11-inch standard paper 
  • Scissors

Steps:

Print a Printable Ring Sizer & Conversion Chart. Set page scaling to "100" in your print settings and use 8.5 x 11-inch standard paper. 
Cut out the sizer. Follow the provided guidelines to carefully cut out the paper ring sizer and the slot as instructed. 
Wrap it around your finger. Slide the pointed end through the slit and gently pull until the ring sizer fits snugly around the base of your finger. 
Read your size. The number visible through the slit corresponds to your ring size. 
 

Method 3: Use a Ring You Already Have

If you already own a ring that fits the intended finger, you can use it to determine your size without measuring your finger directly.

What you'll need:    

Printer 
8.5 x 11-inch standard paper 
An existing ring that fits well 
Steps:

Print a Printable Ring Sizer & Conversion Chart. Set page scaling to "100" in your print settings and use 8.5 x 11-inch standard paper. 
Select a well-fitting ring. Use a ring that comfortably slides on and off the finger you're measuring. 
Match the ring to the chart. Place the ring directly over the printed circles until the inside edge aligns perfectly with one of the circle outlines. 
Check the alignment carefully. You should be able to see the circle just touching the inside edge of the ring without any overlap. 
Confirm the size. The number in the matching circle represents your ring size. 
 

We take a purposeful approach to how jewelry is sourced and crafted because we believe artistry should respect the people and places it comes from. For us, carefully considering every detail includes striving to leave a positive impact on gemstone and gold mining communities worldwide and the jewelry industry at large.

Ring Size Measurement Tips

Getting an accurate measurement comes down to timing, technique, and a few details that are easy to overlook. These tips will help you get the most comfortable and reliable fit.

 

Measure the hand you'll wear the ring on. Your dominant hand is generally slightly larger. Even a small size difference between hands can affect fit, so always measure the specific hand and finger where the ring will be worn. 
Factor in band width. Wider bands fit more tightly than thinner ones. Plan to size up by at least a half size for chunky bands (over 4mm) and size down accordingly for very thin designs (under 1.3mm). Ring sizes are measured in millimeters (mm), not inches. 
Account for temperature. Fingers shrink when cold and expand when warm. Measure when your hands are at a normal, comfortable temperature to avoid an inaccurate reading. 
Measure at the right time of day. Fingers naturally fluctuate in size throughout the day based on activity, hydration, and diet. The most reliable time to measure is toward the middle or end of the day, when your fingers are at their largest. 
Test for knuckle fit. If your knuckle is noticeably larger than the base of your finger, measure both areas and choose a size in between. The ring needs to clear the knuckle comfortably without sitting too loose once it's in place. 
Measure more than once. Finger size can shift slightly from day to day. Taking two or three measurements at different times and comparing results gives you a more accurate average. 
When in doubt, size up. If you fall between two sizes, go with the larger one. Rings can generally be resized down more easily than up.