Use your normal ring size only to pick the first sample to try.
Circular Ring 2 sizing guide
Circular lists US-style whole-size labels, while its official sizing page also notes that Ring 2 can run about a half size above standard. Treat neither statement as an automatic conversion: follow Circular’s digital sizing flow or physical-kit guidance and confirm the final fit before ordering.
- Sizing system
- US-style whole sizes 6–14
- Size range
- Sizes 6–14
- Sizing kit
- Circular offers a phone-camera web tool and a physical kit listed at $5. Its guide recommends the kit as the most reliable option, especially between sizes. Confirm fit with the kit before ordering.
- Price
- Check Circular
Smart-ring advisor
Check smart-ring fit
Order-size check
Follow the brand kit because sensors need steady skin contact.
Wear the sample long enough to catch swelling, sleep, and hand-temperature changes.
Smart-ring kit fit diary · Stored only in this browser. Kit observations do not change your jewelry size or confirm an order size.
Does my normal ring size fit?
Circular lists US-style whole-size labels, while its official sizing page also notes that Ring 2 can run about a half size above standard. Treat neither statement as an automatic conversion: follow Circular’s digital sizing flow or physical-kit guidance and confirm the final fit before ordering.
Use the ring size converter to find your standard size first — it's a useful starting point — but always confirm the Circular Ring 2 fit with the brand's sizing kit or sizing flow.
Frequently asked questions
Does the Circular Ring 2 use a sizing kit?
Circular offers a phone-camera web tool and a physical kit listed at $5. Its guide recommends the kit as the most reliable option, especially between sizes. Confirm fit with the kit before ordering.
Is app-camera ring sizing accurate?
Circular offers a phone-camera web tool and a physical kit listed at $5. Its guide recommends the kit as the most reliable option, especially between sizes. Confirm fit with the kit before ordering.
Compare all devices on the smart ring sizing guide.