In digital marketing, it's important to track and analyze the effectiveness of your campaigns to ensure a positive return on investment (ROI). One key metric to monitor is cost per acquisition (CPA) or cost per conversion (CPC), which measures the total cost of a campaign divided by the number of acquisitions or conversions it generates.

To calculate CPA or CPC, you need to first determine the total cost of your campaign, which can include expenses such as advertising costs, agency fees, and software tools. Next, you need to track the number of acquisitions or conversions generated by the campaign, such as leads generated, sales made, or clicks on a specific call-to-action.

Once you have both the total campaign cost and the number of acquisitions or conversions, you can calculate CPA or CPC using the following formula:

CPA = Total campaign cost / Number of acquisitions or conversions

For example, if you spent $1,000 on a campaign that generated 100 leads, your CPA would be $10 ($1,000 / 100).

Calculating CPA or CPC is important for evaluating the effectiveness of your digital marketing campaigns and identifying areas for improvement. By tracking this metric over time and comparing it to industry benchmarks, you can gain insights into the efficiency and cost-effectiveness of your campaigns.

According to a report by WordStream, the average CPA for Google Ads across all industries is $48.96. However, this can vary widely depending on the industry and the specific campaign. For example, the average CPA for the legal industry is $135.17, while the average for the travel and hospitality industry is $44.10.

In addition to tracking CPA or CPC, it's important to also monitor other key metrics such as click-through rates (CTR), conversion rates, and return on ad spend (ROAS) to get a complete picture of your campaign performance. By using data-driven insights to optimize your digital marketing campaigns, you can achieve a higher ROI and drive business growth.