How is CPA calculated?

CPA (cost-per-action) is calculated by dividing the total cost of a campaign by the number of conversions it generates.

For example, if an advertiser spends $1,000 on a CPA campaign and it generates 50 conversions, the CPA would be $1,000 / 50 = $20.

It's important to note that CPA is typically calculated on a per-campaign basis, rather than on a per-click or per-impression basis. This is because CPA is based on the ultimate goal of the campaign, which is to generate conversions.

To calculate CPA, you will need to track the number of conversions your campaign generates and the total cost of the campaign. You can then use this information to determine the CPA for the campaign.

It's a good idea to track CPA over time and use this data to optimize your campaigns and improve your ROI. You may also want to consider setting a target CPA for your campaigns, which can help you determine whether your campaigns are successful and identify areas for improvement.