Free tool
CPA calculator
See what your CPC and site conversion rate need to be in order to stay under your target acquisition cost. Blue cells are at or below your target; red are above.
Your numbers
What is CPA?
Cost per acquisition, in one line
CPA measures how much you spend on average to acquire one paying customer. It is your CPC divided by your conversion rate — so a cheaper click and a better-converting site both move it, and the grid above shows which one moves it further for you.