CPC vs CPM: Which Metric Matters for Which Campaign?

CPC is cost per click. CPM is cost per thousand impressions. Both are useful, but they answer different questions. CPC focuses on traffic cost, while CPM focuses on reach cost.

Use the CPC Calculator and CPM Calculator together with the CTR Calculator when a campaign buys impressions but you still care about clicks.

When CPC matters more

CPC is useful when the goal depends on visits: landing page traffic, lead forms, product pages or signup flows. It helps compare how expensive each visitor is.

When CPM matters more

CPM matters when reach, awareness or frequency is the main goal. It helps compare media cost before people click.

Read both with outcome metrics

Cheap clicks can still be low quality, and cheap impressions can still fail to create demand. Compare CPC and CPM with conversion rate, CPA and ROAS before judging the campaign.