brew list --formula | xargs -n1 -P8 -I {} \
sh -c "brew info {} | egrep '[0-9]* files, ' | sed 's/^.*[0-9]* files, \(.*\)).*$/{} \1/'" | \
sort -h -r -k2 - | column -t
It display brews like below in sorted form (by size):
brew list --formula | xargs -n1 -P8 -I {} \
sh -c "brew info {} | egrep '[0-9]* files, ' | sed 's/^.*[0-9]* files, \(.*\)).*$/{} \1/'" | \
sort -h -r -k2 - | column -t
It display brews like below in sorted form (by size):