shownum is a simple tool that converts numbers.
It was invented by Oliver Wagner back in the good old Amiga days and is 
probably his greatest software ever. Since it’s faster to rewrite it from 
scratch than looking for a replacement, here it is.

Examples:
zapek@bacterion:~$ shownum 666
Number of bits used: 16 (2 bytes)
Dec: 666
Hex: 0x29a
Oct: 1232
Asc: ..
Bin: 0000001010011010
     ^---+---^---+---

zapek@bacterion:~$ shownum 0x574d5633
Number of bits used: 32 (4 bytes)
Dec: 1464686131
Hex: 0x574d5633
Oct: 12723253063
Asc: WMV3
Bin: 01010111010011010101011000110011
     ^---+---^---+---^---+---^---+---

zapek@bacterion:~$ shownum -1
Number of bits used: 64 (8 bytes)
Dec: 18446744073709551615   --- hi: 4294967295  lo: 4294967295
Hex: 0xffffffffffffffff     --- hi: 0xffffffff  lo: 0xffffffff
Oct: 1777777777777777777777 --- hi: 37777777777 lo: 37777777777
Asc: .... | ....
Bin: 11111111111111111111111111111111 | 11111111111111111111111111111111
     ^---+---^---+---^---+---^---+---   ^---+---^---+---^---+---^---+---

zapek@bacterion:~$ shownum plop
Number of bits used: 32 (4 bytes)
Dec: 1886154608
Hex: 0x706c6f70
Oct: 16033067560
Asc: plop
Bin: 01110000011011000110111101110000
     ^---+---^---+---^---+---^---+---

Original url:
http://zapek.com/?page_id=17