functional but not pretty click "guessing hex" or "guessing decimal" to switch between them also if the hex number is 1 digit long you have to put a 0 before it because i said so (eg. 2 -> 02)
explanation: hexidecimal is base 16, the digits are 0 1 2 3 4 5 6 7 8 9 A B C D E F instead of 0 1 2 3 4 5 6 7 8 9 so 25 in hexadecimal really means 2 sixteens and 5 ones instead of 2 tens and 5 ones if this doesn't make sense there's probably better explanations elsewhere