Size Guide


To determine your size, we strongly advise that you measure the size of your finger rather than the size of your ring.

1. Using a length of string or ribbon, wrap it around the base of your finger. To ensure the ring fits comfortably, we suggest measuring your knuckle as well. We recommend selecting a size that will slide on and off your finger easily.

2. With a pen, mark the point on the string where the ends meet, measure the string in millimetres with a ruler.

3. Choose the closest measurement to the chart below to identify your ring size.


HAOYANG uses EU ring size on all products (ISO 8653:2016). Our accuracy is strictly controlled within ±0.1mm. Note: TW is not an international standard; therefore, you should measure and compare against other, more widely accepted standards.

If you don’t know your size when placing your order, please contact Customer Service at [email protected] with your order number to request a free ring sizer to help you find the correct ring size.


1. The string or ribbon must fit snugly to produce an accurate size reading. 

2. Finger size can change depending on the time of day and weather; for the most accurate measurement, measure your finger at different times of the day, and on different days to provide comparisons. 

3. Avoid measuring your fingers when they are cold or wet, as they will be at their smallest.

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