How to Measure Your Ring Size at Home – Find Your Perfect Fit Easily

Posted on Mar 20, 2025

Wondering how is a ring size measured?

Finding the right ring size is crucial when shopping for rings online or in-store. Whether you're buying a new ring for yourself, a promise ring, an engagement ring, or a gift, getting the correct size ensures comfort and style.

In this guide, we’ll show you how to measure your ring size at home using simple and accurate methods. You can measure an existing ring, use a strip of paper or string, or visit a professional jeweller for expert sizing.

Learn how to find your ring size quickly and accurately so you can confidently shop for the perfect ring online.

Method 1: Measure an Existing Ring

One of the easiest ways to find your ring size is by measuring a ring you already own that fits the desired finger.

Steps:

Select a ring that fits your chosen finger perfectly.
Use a ruler or calliper to measure the internal diameter of the ring in millimetres (mm).
Match the measurement with the corresponding ring size using the chart below.

Ring Size Chart – Internal Diameter (mm) to US/Canada Ring Size

Internal Diameter (mm)	US/Canada Ring Size
14.1 mm	3
14.9 mm	4
15.7 mm	5
16.5 mm	6
17.3 mm	7
18.1 mm	8
19.0 mm	9
19.8 mm	10
20.6 mm	11
21.4 mm	12
22.2 mm	13

Method 2: Measure Your Finger at Home

If you don’t have a ring to measure, you can determine your ring size using a strip of paper or string.

Steps:

Cut a thin, long strip of paper or string.
Wrap it snugly around the base of your finger. It should be tight but comfortable.
If you have large knuckles, measure both the knuckle and the finger base—you may need a size in between.
Mark where the ends meet with a pen.
Flatten the strip and use a ruler to measure the length in millimetres (mm).
Match your finger circumference to the correct ring size using the chart below.

Ring Size Chart – Finger Circumference (mm) to US/Canada Ring Size

Finger Circumference (mm)	US/Canada Ring Size
44.2 mm	3
46.8 mm	4
49.3 mm	5
51.9 mm	6
54.4 mm	7
57.0 mm	8
59.5 mm	9
62.1 mm	10
64.6 mm	11
67.7 mm	13

Other Ways to Find Your Ring Size

1. Use a Ring Sizer at Home

For the most precise measurement, consider buying an adjustable ring sizer online. These affordable tools allow you to measure multiple fingers and ensure a perfect fit.

2. Visit a Local Jeweler

If you're still unsure, visit a local jewelry store for professional ring sizing. A jeweller can measure your finger accurately and recommend the best ring size based on your finger shape and ring style.

Still Unsure? We Can Help!

If you have questions about finding the right ring size, our team is happy to assist you. Contact us for personalized advice.

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