The fitting room
Find your perfect size
A ring that fits well never asks for your attention. Use the tools below to find your size with confidence, from a ring you already own, a strip of paper, or our printable sizer. No tape measure required.
The live gauge
Know one size, get them all
Enter a size you already know and the rest convert instantly. For an exact fit, use the printable sizer below or order a ring sizer.
The international chart
Every system, one table
| US / CA | UK / AU | Europe | Japan | Diameter (mm) | Circumf. (mm) |
|---|
Figures follow the ISO 8653 standard. The row matching the converter above is highlighted. Japan sizes are the nearest standard equivalent.
Three ways to measure at home
Measure a ring you own
Take a ring that already fits the right finger and match its inner circle to the chart, or lay it over the printable sizer.
Wrap a strip of paper
Wrap a thin strip of paper around the base of your finger, mark where it meets, and measure the length in millimeters. That number is your circumference.
Use the printable sizer
Download our printable sizer, print at 100%, and either lay a ring over the circles or wrap the finger strip around your finger.
Print at home
Printable ring sizer
No ring to measure? Download our printable sizer and print it at 100% (Actual size), with no page scaling. Check that the ruler on the page measures exactly 80 mm, then lay a ring over the circles or wrap the finger strip around your finger.
A few things that quietly change the fit
Wide bands sit tighter
For anything over 6 mm wide, size up a quarter to a half. The extra surface against your skin makes the same nominal size feel snugger.
Mind a larger knuckle
If your knuckle is wider than the base of your finger, choose a size that slides over it comfortably, then the ring will settle securely below.
Measure warm, at day's end
Fingers swell in heat and over the course of the day. For a true everyday fit, measure in the evening rather than first thing in the morning.
Good to know
Ring size guide FAQs
For women, US 6 to 6½ is most common, roughly 16.5 to 16.9 mm inner diameter. For men, US 9 to 10½ is typical, around 18.9 to 20.2 mm. These are starting points, not rules. For a surprise, measure a ring the person already wears rather than guessing.
UK sizes use letters and US sizes use numbers. A US 6 is about UK L½, a US 7 is about N½, a US 8 is about P½, and a US 9 is about R½. When in doubt, give your inner diameter in millimeters as a backup, which removes any conversion error.
European sizes are simply the inner circumference of the ring in millimeters, so a 54 measures 54 mm around the inside. That is about a US 7. European 57 is roughly US 8, and European 60 is roughly US 9½.
Size up, especially for a wide band. If you are between sizes on a thin band, the smaller size is often fine; on a band 6 mm or wider, choose the larger. When possible, try a sample in the exact width you plan to order before deciding.
Many can. Solid gold and platinum can usually be resized in either direction, and sterling silver within a narrower range. Tungsten, titanium, Damascus steel and fully stone-set eternity bands generally cannot be resized. If you are unsure about a specific piece, message us before ordering.
Get in touch and we will arrange a resize or exchange on eligible, unworn, non-engraved pieces. For resizes and exchanges you only cover the shipping cost. Customized or engraved items are final sale. Message us with your order number and we will walk you through it.
Borrow a ring they already wear and match it to the chart or printable sizer, or press it into a bar of soap to capture the shape. Trace the inner circle and compare it to the diameter column in the chart above.