How this conversion works
255 is the largest value a single byte (8 bits) can hold, which is why it turns up everywhere from RGB colour channels to subnet masks. In binary every one of those eight bits is set.
Each base just uses a different set of digits for the same quantity. Reading
255 as a decimal number gives the decimal value
255; expressing that same value in base two, eight or sixteen
produces the rows above. To convert any number between bases — including custom bases from 2
to 36 — use the number base converter.