CPC: Cost Per Click
The average amount paid for each click on a paid advertisement.
Formula
Why it matters
CPC measures traffic acquisition efficiency. A rising CPC with flat conversion rate means rising CPA — an early warning signal for campaigns that need audience or creative refresh.
How to improve CPC
Improve Quality Score on Google (better ad relevance and landing page experience), test new creative formats on Meta, refine keyword match types to eliminate irrelevant clicks.
Google Search: $1–$10 (varies by industry). Meta Ads: $0.50–$3. LinkedIn: $5–$15.
Prooflytics tracks CPC automatically from your connected sources and flags it in your daily briefing when it moves significantly.
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Calculate CPC from spend and clicks
CPC
CPC = Ad Spend ÷ Clicks
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Estimate CPC from CPM and CTR
Estimated CPC
CPC = CPM ÷ (CTR × 10)
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Frequently asked questions
What is a good CPC?
There is no universal good CPC — it depends on your conversion rate and CPA target. A $5 CPC with a 10% conversion rate gives a $50 CPA; the same $5 CPC with a 1% conversion rate gives a $500 CPA. Always evaluate CPC in the context of conversion rate and CPA.
Why did my CPC increase?
CPC rises when competition increases (more advertisers bidding for the same audience), when your Quality Score drops (lower ad relevance or landing page quality), or when your budget is too low to win auctions efficiently.