Definition eCPC in online advertising

eCPC is effective cost per click in online advertising.

While CPC is the actual price for each click when buying clicks, eCPC is a calculated metric that tells you what the CPC would have been if you bought clicks instead of impressions, actions etc.

The term CPC is often used instead of eCPC in the everyday language.

In this case it is actually an eCPC of 10 USD, not a CPC:
- When I was going through the reports for our last CPM campaign I realized that it gave a CPC of 10 USD.

See also the definition of CPC and the article about buying methods in online advertising.

I also recommended using the CPM calculator to make sure you get your numbers right.