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Measure a ring you already wear
Choose a ring that fits the same finger. Measure the inside diameter across the centre, from inside edge to inside edge. If it is hard to read, measure a few times and use the largest result.
Ring size guide
Find your inSync ring size
inSync rings are wider and more sculptural than a fine band, so they should feel snug but comfortable. If you normally sit between two sizes, choose the larger size.
Three easy sizes for sculptural inSync rings.
Quick size guide
Use this as your starting point. For the most accurate fit, check against the printable guide.
Small
US 5-6
AU/UK J 1/2-M
Inside diameter: 15.7-16.5mm
Medium
US 7-8
AU/UK O-Q
Inside diameter: 17.3-18.2mm
Large
US 9-10
AU/UK R 1/2-T 1/2
Inside diameter: 18.9-19.8mm
Measure your finger
Wrap a strip of paper or string around the widest part of your finger, usually near the knuckle. Mark where it overlaps, then measure the length in millimetres.
Allow for sculptural width
Many inSync rings have a wider grip than a fine band. If you are between sizes, or comparing to a thin ring, choose one size larger for comfort.
Best time to measure
Measure at the end of the day, when your hands are warm and your fingers are at their largest. Avoid measuring when your hands are cold, damp or swollen.
Buying a gift?
If you can borrow one of their rings, use the printable guide to match the inside edge to the circles. If you are unsure, choose the larger size or get in touch before ordering.
Printable reference
Print at 100% scale
The printable guide includes ring circles and a cut-out measuring strip. Make sure your printer is set to actual size or 100%, not “fit to page”.
What if I am between sizes?
Choose the larger size. inSync rings are sculptural and often wider than a fine band, so a little extra room usually feels better.
Can I exchange if the size is wrong?
Yes, inSync rings can be exchanged for another size or style if they are returned in original condition and packaging.
Need help choosing?
Email Iris before ordering and include the ring style, the finger you want to wear it on, and any measurements you have.