You can easily determine your bracelet length with a measuring tape. Simply put the tape around your wrist, where you want to wear your jewelry. In place of a measuring tape you may also use some lace or cord. Tag the place where the ends overlap and measure the length with a ruler. Please make sure not to wear the bracelet too tightly or too loosely to avoid loss of jewelry and unpleasant pressure marks on your wrist. As a rule of thumb your little finger should fit between the measure tape and your wrist – Thus you play it safe.
You can also determine your bracelet length digitally.
Measuring units for bracelet lengths by Fope, Pesavento and Marco Bicego
In the following you find a conversion from centimeters to the measuring units S / M / L / XL. Please bear in mind that these are just rough guidelines and you need to find out your perfect length individually: