CPA Calculator: Calculate Cost Per Acquisition in 3 Steps

Measure the success of your campaign easily with Publift’s cost per acquisition calculator. Our CPA calculator helps you to easily estimate the cost to acquire new customers from specific campaigns, so you can optimize your efforts and maximize the return on investment (ROI) on our marketing spend.

CPA Calculator


What Is Cost Per Acquisition (CPA)?

Cost Per Acquisition (CPA) is a metric that measures the aggregate cost to acquire a paying customer on a campaign.

CPA is one of the most important performance indicators for advertisers in online advertising as it relates directly to the end goal of every business process—sales.

Cost Per Acquisition (CPA) Formula

The formula to calculate CPA is as follows:
CPA = Total Cost of Campaign / Number of Conversions

Suppose an advertiser spends $5,000 on an online advertising campaign per month, resulting in 100 conversions during a specific month (for instance, purchases made on the company's website). In this case, the CPA of the company for that month can be calculated as follows:

CPA = $5,000 / 100 = $50

This implies that each conversion in the campaign cost the company $50. In other words, it costs the business $50 to acquire a new customer, and hence this is their cost per acquisition.

Formula to calculator CPA

How to Calculate CPA Using the CPA Calculator?

Use our cost CPA calculator to determine the CPA of your ad campaigns in three easy steps.

  1. Determine your total ad spend: Calculate the total cost of the advertising campaign. If you’re not sure of the exact figure, you can check it in the analytics dashboard of the platform you are using to run your ads.
  2. Count your conversions: Next, input the number of conversions or acquisitions into the CPA calculator. In the above example, the business acquired 100 new paying customers, so input "100" in the "conversions" field.

What Is Considered a Good CPA?

A "good" CPA can vary depending on the industry, business models, and conversion rate. While aiming for a good CPA, keep in mind that the average customer lifetime value (CLV) can be an essential metric to determine whether a CPA is "good" or not.

A CPA lower than 30% of the CLV can be considered good since it means the advertiser makes a profit from every new customer. On the other hand, a higher CPA indicates the need for adjustments in your advertising strategy.

Frequently Asked Questions

Why Is CPA Rate Important?

CPA measures the aggregate cost to acquire a customer from a specific ad campaign, providing users with an accurate picture of their campaign efficiency. Understanding CPA helps marketers evaluate their advertising campaign and its efficiency across paid marketing channels. This, in turn, allows them to make informed decisions, adjust strategy, and improve marketing efforts for the best result.

What Is a Typical CPA Rate?

The typical cost per acquisition rate can vary depending on several factors such as the industry, market, the advertising platform, conversion rate, and the effectiveness of the marketing campaign.

What Affects Your CPA?

Several factors, such as target audience, ad quality and relevance, bidding strategy, competition, and conversion rate affect the average CPA. Keep in mind that lowering your cost per acquisition is a good goal, but it’s not the only factor to consider as there are other metrics like lifetime value that affect the profitability of your ad campaigns.

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