Smart ring size guides
Smart-ring sizes are brand- and sometimes generation-specific. Use these independent guides to understand the differences, then confirm with the correct manufacturer sizing kit.
Oura Ring
Oura uses whole sizes, but its sizes differ slightly from standard US jewellery sizes and also differ between product generations.
Samsung Galaxy Ring
Samsung warns that the sensors and internal design can make your usual jewellery size a poor fit for Galaxy Ring.
RingConn
RingConn says its sizes differ from regular rings. Gen 2 and Gen 2 Air share measurements, while RingConn recommends the generation-specific Gen 3 kit.
Ultrahuman Ring AIR
Ultrahuman says Ring AIR sizing differs from standard market sizes and other smart-ring brands, so an ordinary jewellery size is not a reliable direct conversion.
Find the right smart-ring kit or device.
Choose the brand-specific sizing kit first; standard jewellery sizes do not reliably transfer.
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