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Ring Size Guide

Find Your Ring Size

Whether you want to know the size of your ring finger or simply an existing ring, we have made things simple. Here is your fail-safe guide to finding your ring size from the comfort of your home.

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Buying a Gift?

When buying a ring as a gift, the best way (but not always the easiest) is to borrow an existing ring from the correct finger and use our downloadable Ring Size Guide to determine its size.

How To Video

Conversion Table

UK Size US Size EU Size Diameter (mm)
Size J 5 49 15.6mm
Size K 5 1/2 50 16.0mm
Size L 6 51 16.4mm
Size M 6 1/2 53 16.8mm
Size N 7 54 17.2mm
Size O 7 1/2 55 17.6mm
Size P 8 56 18.0mm

Tips & Tricks


Measure your ring size at the end of the day when fingers are at their largest.

Consider the width of the band, a particularly thick band will feel tighter than a thin band so you may want to buy a full size larger than your normal ring size.

Ensure that your ring sizer fits comfortably, snug enough so that so that it will not fall off, but loose enough to slide over your knuckle.

Do Not

Do not measure your hands when they are cold, they may have shrunk up to half a size.

Alcohol and salt can make your fingers swell so refrain from measuring your ring size after any champagne and canapé filled evenings.

Still Unsure?

Our Personal Shopping Team have buckets of experience when it comes to ring sizing. They can talk you through all your options, including re-sizing rings to ensure the most perfect fit possible. Simply email PersonalShopper@AstleyClarke.com or call +44 (0) 207 706 0060 for advice.

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