regex - How do I convert 1024 KB to 1 MB with the output?

Question

I have this

/([^/|#<(>;s][0-9]*[s][KB]{2})

in order to be specific i had to use [KB]{2} I get the value needed, but can I convert the final print to MB?

Exemple: match= 2000KB = 2MB?

Thanks

Answer 1

Sure you can; capture the unit and the number separately like this:

/[^/|#<(>;s]([0-9]*)[s]([KB]{2})

Assuming your original regex is correct, of course. Then:

if ($2 eq "KB" && $1 > 1024) {
    $1 /= 1024;
    $2 = "MB";
}