CPM advertisers pay based on how often their ad is shown to users. For example, when you buy 10000 visits with a $2 CPM, you'd end up paying $20 for the whole campaign. With CPC advertising, advertisers pay for actual visits to their site. For example, you may agree on $1.5 CPC and this is how much you'll pay for every single click.

CPM calculator helps you with cost and volume of advertising traffic.
CPM calculator helps compute a basic task for online marketers and publishers.


CPM is shorthand for cost per mile or cost per thousand and is a common measure of volume in advertising.

CPC is cost per click


CPM formula is CPM = 1000 * cost / impressions

CPC = total_cost / number_of_clicks.