CPA Calculator — Cost Per Acquisition
Calculate your Cost Per Acquisition (CPA) and see how it compares to your target. Optionally enter product margin to see profit or loss per acquisition.
CPA Formula
Frequently Asked Questions
CPA (Cost Per Acquisition) is the total cost of acquiring one paying customer or completing one conversion through advertising. It is calculated as Total Ad Spend ÷ Number of Acquisitions.
A good CPA is any amount less than the profit margin per customer. If your product earns $80 profit and your CPA is $50, you profit $30 per acquisition. Industry benchmarks vary: e-commerce averages $45–$80, SaaS $100–$300.
CPA is the cost per specific conversion event (could be a lead, sign-up, or purchase). CAC (Customer Acquisition Cost) is the total cost to acquire a paying customer, including all sales and marketing costs beyond just ad spend.
Improve your landing page conversion rate, test different ad creatives and audiences, use retargeting to convert warm audiences at lower cost, and optimise your bidding strategy. Even a small CVR improvement dramatically reduces CPA.
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