PAID SOCIAL · THE YELL SOCIAL GLOSSARY
Cost per thousand impressions (CPM).
The advertising cost for one thousand impressions. It is calculated as spend divided by impressions, multiplied by 1,000.
A simple example
A campaign spends $120 for 20,000 impressions, so its CPM is $6.
Put it into practice
Compare similar audiences and placements. CPM measures exposure cost, not attention, unique people, or sales.