RingConn Gen 2 sizing guide

RingConn publishes inner-diameter and circumference measurements for its sizes, so you can compare them with a standard chart. Still, RingConn recommends its sizing kit because biometric rings need a secure, comfortable fit.

Sizing system	Proprietary, with a published mm chart
Size range	Sizes 6–14
Sizing kit	Free sizing kit, a 3D-print template, or borrow-and-measure.
Price	~$299

Smart-ring advisor

Check smart-ring fit

My usual jewelry size Target smart ring Old Oura Ring 4 size, optional

Does my normal ring size fit?

Use the ring size converter to find your standard size first — it's a useful starting point — but always confirm the RingConn Gen 2 fit with the brand's sizing kit or sizing flow.

Frequently asked questions

Does RingConn use normal ring sizes?

RingConn uses its own size numbers but publishes millimetre measurements, so you can compare against a standard chart. Use that comparison as a starting point, then confirm with the sizing kit.

What sizes does the RingConn Gen 2 come in?

Sizes 6 through 14, with a sizing kit, a 3D-print template, or a borrow-and-measure option.

Compare all devices on the smart ring sizing guide.