Quick Ring Size
Size chart

Printable ring sizer

Retailer PDFs often shrink when a browser fits them to the page, which quietly ruins the sizing. This one prints at true size, and gives you a way to prove it before you trust the result.

Print settings that matter. In the print dialog, set Scale to 100% (or "Actual size") and turn off "Fit to page" or "Shrink to fit". Then measure the scale bar below before using the sizes.

1 · Check the scale

Measure both with a ruler. The bar should be exactly 50 mm and the outline should match a real bank card. If they do, everything else on this sheet is at true size.

This bar should measure exactly 50 mm
A bank card should fit this outline exactly (85.6 × 53.98 mm)

2 · Match a ring to a circle

Rest a ring you own over these circles. The circle whose edge lines up with the inside of the band is your size. Each circle is the inner diameter for that US size.

US 3
14.1 mm
US 4
14.9 mm
US 5
15.7 mm
US 6
16.5 mm
US 7
17.3 mm
US 8
18.1 mm
US 9
18.9 mm
US 10
19.8 mm
US 11
20.6 mm
US 12
21.4 mm
US 13
22.2 mm

3 · Or wrap the strip

Cut out the strip, wrap it snugly around the base of the finger, and read the US size printed where the end overlaps the start.

3 4 5 6 7 8 9 10 11 12 13

Measure at the end of the day, when the finger is largest, and clear the knuckle. If you land between two numbers, take the larger.

Prefer not to print?

The on-screen sizer does the same job without a printer: calibrate to a bank card and measure a ring. Or if you already have a millimetre measurement, go straight to mm to ring size.