CTR, CPC, CPM & CPA Calculator
One calculator for the core paid-media metrics: click-through rate, cost per click, per thousand views and per acquisition.
CTR = clicks ÷ impressions. CPC = spend ÷ clicks. CPM = spend ÷ impressions × 1000. Conversion rate = conversions ÷ clicks. CPA = spend ÷ conversions.
Results are estimates for planning and learning. Check important numbers against your own data and a qualified professional. Everything is calculated in your browser; nothing you enter is sent anywhere.