Cost Per Click (CPC)

Cost per click is the amount an advertiser pays each time a user clicks on their ad. CPC is a foundational metric in pay-per-click advertising that directly affects campaign budgets and profitability. Lower CPCs generally indicate more efficient ad spend, though they must be weighed against conversion quality. Why it matters: CPC determines how far your advertising budget stretches and directly influences your cost per acquisition and return on ad spend. A business paying $2.00 per click instead of $5.00 effectively gets 2.5 times more traffic for the same budget, which can be the difference between a profitable campaign and one that bleeds money. Average CPCs vary dramatically by industry; legal and insurance keywords can exceed $50 per click, while e-commerce retail averages around $1.00 to $2.00. The most effective way to lower CPC is to improve Quality Score, which rewards relevant ads and strong landing pages with discounted click costs. Marketers should monitor CPC alongside conversion rate and revenue per click to ensure cheaper clicks are not simply attracting lower-quality traffic that fails to convert.