Cost per click (CPC) is the amount you pay each time someone clicks one of your ads on platforms such as Google Ads, Microsoft Advertising or social networks that use auction-based bidding. Rather than paying for impressions or reach, you only pay when a user actively interacts with your ad.
A lower CPC means you can drive more traffic for the same budget, but it is not a metric to chase blindly. A higher CPC can still be profitable if the clicks come from motivated users who convert at strong rates. CPC also varies by industry, competition, audience intent and ad quality, so it is best understood as part of a wider performance picture.
Most paid media platforms let you influence CPC through bid strategies, keyword selection, audience targeting and ad relevance. Improving ad quality and ensuring the search term aligns closely with your landing page can also help reduce CPC without weakening results.
Understanding CPC gives you clearer control over spend efficiency and helps you judge whether your campaigns are attracting the right users at a sustainable cost.
Example: A campaign paying £1.40 per click and driving 500 clicks would spend £700. If those clicks produce sales or leads at a strong rate, the CPC is considered efficient.
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