Base62 is a binary-to-text encoding that represents arbitrary data (including binary data) as ASCII text. It encodes data as the 62 letters and digits of ASCII capital letters A-Z, lower case letters a-z and digits 0–9.
123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz = 58 characters = base58
0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz = 62 characters = base62
0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz+/ = 64 characters = base64
Alphabet The Base62 alphabet:
Value Char Value Char Value Char Value Char 0 16 32 48 1 17 33 49 2 18 34 50 3 19 35 51 4 20 36 52 5 21 37 53 6 22 38 54 7 23 39 55 8 24 40 56 9 25 41 57 10 26 42 58 11 27 43 59 12 28 44 60 13 29 45 61 14 30 46 15 31 47
See also List of numeral systems
References