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    Ring Size Converter

    Convert ring sizes between US, UK, EU and Japan, or find your size from finger circumference, with this free online ring size converter and size chart.

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    Found it useful? Share Ring Size Converter

    Free, no sign-up, works in the browser — send it to a friend or add it to your site.

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    How to use Ring Size Converter

    1. 1Pick whether you know your size, will measure your finger, or will measure a ring
    2. 2Enter the size or the measurement in mm or inches
    3. 3Read the matching US, UK, EU and Japanese sizes and the diameter

    Frequently asked questions

    How do I measure my ring size at home?▾

    Wrap a strip of paper around the base of your finger, mark the overlap and measure the length in millimetres. Enter it as the finger circumference.

    What is the most common ring size?▾

    For women in the US the most common sizes are 6 to 7; for men they are 9 to 10.

    What if I am between two ring sizes?▾

    Choose the larger size, especially for wide bands, since knuckles and warm weather make fingers slightly bigger.

    Embed Ring Size Converter on your website▾

    Paste this snippet into your page. The embedded tool runs in your visitor's browser and shows a small “Powered by clkr.work” link.