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How to Measure Ring Size: A Complete Guide

Finding the perfect ring size is essential for comfort and ensuring your ring fits securely. Whether you're measuring for yourself or as a surprise for someone else, this guide will help you determine the correct size using Australian sizing standards.
Method 1: Measure an Existing Ring
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Find a Well-Fitting Ring: Use a ring that fits comfortably on the intended finger.
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Measure the Inside Diameter:
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Place the ring on a ruler.
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Measure the diameter (in millimetres) across the widest inside part of the ring.
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Compare to an Australian Ring Size Chart: Match the diameter measurement to a standard size chart to find the corresponding ring size, see below.
Diameter (mm) | Australian Size |
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14.5 | F |
15.7 | J |
16.5 | L |
17.3 | N |
18.1 | P |
19.1 | R |
(Note: These are common sizes. Refer to a full chart for more options.)
Method 2: Measure Your Finger
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Use String or Paper:
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Wrap a thin strip of paper or string around the base of the finger. Be careful not to use a string that will stretch.
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Mark the point where it overlaps.
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Measure the length of the string/paper in millimetres.
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Convert to a Ring Size: Use the following conversion chart:
Circumference (mm) | Australian Size |
44.2 | F |
48.7 | J |
51.2 | L |
54.4 | N |
57.0 | P |
60.0 | R |
(Tip: Measure at the end of the day when your fingers are at their largest.)
Tips for Accurate Measurement
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Consider Finger Swelling: Fingers can change size throughout the day and in different temperatures.
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Measure Multiple Times: Take measurements a few times to ensure accuracy.
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Account for Ring Width: Wider bands may require a slightly larger size for comfort.
Frequently Asked Questions
1. Can I measure a ring size without the person knowing?
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Yes! Borrow a ring they already wear on the intended finger and measure it.
2. What if I’m between sizes?
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Choose the larger size to ensure comfort, it's also easier to reduce the size of a ring than enlarge the size of a ring.
3. Are Australian ring sizes the same as US sizes?
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No, Australian sizes differ. For example, an Australian size J is equivalent to a US size 5.
Need More Help?
If you're still unsure about your ring size, contact us by clicking here and request a ring sizer. Please include detail of the ring you're interested in and your shipping address, we will send it to you free of charge.
With this guide, you’ll feel confident in choosing the perfect size for your next ring purchase. Happy shopping!