SimplyRFiD

A system of numbers always has a base that represents how many numbers are used to count in that system. For example, the numbers we use commonly for everyday activity are considered Base-10, or using the "decimal" system, because there are 10 distinct numbers necessary to create all the numbers possible in the system. Another system of numbers that may be familiar is the "binary" system, or Base-2, which uses only 1's and 0's to create every number in their system.

RFID tags use "hexadecimal" numbers to identify themselves. The word itself is derived from Greek where "hexa" means "sixth" and "decimal" means "tenth". It logically follows that the word would mean 16th, thus the system is Base-16 and requires 16 individual counting numbers to create all the numbers possible in the system. These numbers are : 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F. The number "15" in Hex would be "E", the number "17" would be "10", and the number "100" would be "64" in hex.

Conversion between hexadecimal and decimal (our counting system) is not the easiest thing to do, so if you really want to try we recommend you use a calculator!