# CPA Calculator

Definition: It is metric used in online advertising that measures the cost to obtain one paying customer from an advertising campaign, a sale, click, newsletter etc.

CPA stands for Cost Per Acquisition it can also stand for Cost Per Action while CPA can also be known as Pay Per Acquisition (PPA) and Cost Per Conversion.

The advertiser pays for each acquisition/action and with the conversion rate we can calculate the CPA. It is important to know, as what you are paying per ad to get a visitor may not equate to a conversion.

Generally, companies have many promotions in various forms running. Calculating CPA per each venture helps in deciding if one form of marketing is not working as the CPA is too high.

Some of the markets where a CPA can be used are

• Organic search
• Emails
• User registration

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