Unfortunately stringlength and bytecount are not the same. You can use Devel::Size for estimations on datastructure sizes.
The example shows "abcdef" take 31 bytes of memory. 
$ perl -MDevel::Size+'total_size' -e 'print total_size "abcdef"'
31

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In reply to Re: Way to predict Array Memory Size for returned LDAP Searches? by codeacrobat
in thread Way to predict Array Memory Size for returned LDAP Searches? by ghenry

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