To convert inside diameter of bangles into circumference (length)
The formula to calculate the circumference (the distance around the bangle) (Diameter/2) multiply by 6.28
So a 60mm diameter bangle would be (60/2) multiply by 6.28 = 30 multiply by 6.28 = 188.4mm
A 50mm diameter bangle would be (50/2) multiply by 6.28 = 25 multiply by 6.28 = 157mm
To convert millimetres length into inches
To convert millimeters to inches, multiply the millimeters by 0.03937.
To determine bracelet/bangle size
Measure wrist and add about 2cm (about 1 inch), depending on how tight you want it.
Celtic Bangles
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