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Free CTR, CPC, CPM and CPA Calculator

Calculate click-through rate, cost per click, cost per thousand impressions and cost per acquisition. Fill in any known values.

How to use this tool

Enter spend, impressions, clicks and conversions. The tool calculates every metric it has enough data for.

How is CTR calculated?

Clicks divided by impressions, multiplied by 100.

What is the difference between CPA and CPL?

CPA is cost per acquisition (a sale or any defined conversion). CPL is cost per lead.