The best way to ascertain the required length of a bracelet is to measure your hand circumference using a string and then measuring the string. Then just divide the resulting length by the diameter of beads (also in cm) which you will use to make the bracelet. Be aware of the fact that beads from natural materials can vary in size a little, therefore you should buy a couple more beads just in case. If you want to create a real Mala, you need to count multiples of 9 beads, which symbolises the number of planets in our solar system. Mala necklace always has to be made from 108 beads.