Find out your ring size
The most accurate way to find your ring size is to measure a ring that already fits the correct finger comfortably.
Open this on your phone
The sizer measures against a real screen, so it needs a phone. Go to 9dunes.com/pages/ring-sizer on your mobile — or use the size chart below if you already know your measurement.
Your page is zoomed. Pinch back to 100% or the measurement will be wrong.
Measure a ring you own
- Take a ring that already fits the finger well.
- Lay it flat on the dark circle below.
- Slide until the circle is exactly filled by the INSIDE of the ring, no dark edge showing, no gap.
17.0 mm inner diameter
- Between two sizes? Go up. A slightly loose ring is far more wearable than a tight one.
- Wide bands run small. For our bolder pieces - Organic Bold, Bold Tides, Bare - consider one size up.
- Fingers change. They swell in heat and late in the day, and shrink when cold. Measure warm.