CPA calculator: cost per acquisition
Find out what each sale, lead or sign-up costs you. Enter ad spend and conversions to get the CPA, compare it with what a customer is worth, and plan the budget for your next conversion goal.
How to use the CPC & CPA Calculator
- 1Enter your ad spend and the number of clicks.
- 2Add impressions for the click-through rate, and conversions for CPA and conversion rate.
- 3Switch to Budget to see what a target number of clicks or conversions would cost.
Frequently asked questions
How do you calculate CPA?
CPA = ad spend ÷ conversions. If 500 of spend brought 20 sales, each sale cost 25 to acquire. Count only the conversion you care about, such as purchases rather than add-to-carts.
What is the difference between CPA and CPL?
CPL, cost per lead, is a CPA where the conversion is a lead such as a form or call. A lead isn't a customer yet, so also track how many leads become customers.
What is a good CPA?
A CPA below what a customer is worth to you after costs. If a customer brings 60 of profit over time, a CPA of 30 is healthy, even if it looks high next to someone else's.
Related free tools
All tools- CPC & CPA CalculatorCost per click and per conversion from spend, clicks and results.
- CPM CalculatorCost per thousand impressions, or the budget you need.
- ROAS CalculatorReturn on ad spend and the break-even ROAS for your margin.
- Social Media ROI CalculatorWhat your social media work returns, including your time.
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