Convert ring sizes between US, UK, EU and Japan instantly, or find your size from your finger’s diameter or circumference in mm. Free ring size converter and chart. Try it now. Buying a ring online from another country? Sizes change from one country to the next, and a wrong guess can mean a ring that doesn’t fit. The Toolharo Ring Size Converter turns any ring size into the US/Canada, UK/Australia, EU (ISO) and Japan equivalents in one click. You can also start from your inside diameter or circumference in millimeters and see your size in every system. A full ring size chart is included, so you can compare sizes at a glance. It is free, works on mobile and desktop, and needs no signup.
[toolharo_ring_size_converter]
How to Use:
- In “Convert from”, choose the system you already know, such as US / Canada, UK / Australia, EU / ISO or Japan.
- Pick your size from the list.
- The equivalent sizes in every other system appear at once, along with the inside diameter and circumference in mm and inches.
- If you don’t know your size, choose “Inside diameter (mm)” or “Inside circumference (mm)” and type in a measurement. Measure with a strip of paper or string wrapped around your finger, or use a ring that already fits.
- Open “Full ring size chart” to see a table of sizes side by side. The row closest to your size is highlighted.
- Click “Copy results” to copy the conversions for use in a message or order form.
