Format::human::bytes is used to convert bytecount values to human-readable strings. it will return you a printable string which is more readable by humans than a simple bytecount.

for example:
use format::human::bytes;
$readable = format::human::bytes::base2($bytecount[,$decimals]);
it will convert in base 2 format.

$readable = format::human::bytes::base10($bytecount[,$decimals]);
it will convert in base 10 format.

another way is to create constructor for example:

$fhb = format::human::bytes->new();
$readable = $fhb->base2($bytecount[,$decimals]);
$readable = $fhb->base10($bytecount[,$decimals]);