Cost Per Lead (CPL)
CPL (Cost Per Lead) is the average cost to acquire one lead — a prospect who shares contact details or expresses interest, typically via a form. It's the primary efficiency metric for lead-generation campaigns.
Formula
CPL = Total ad spend ÷ LeadsExample
Spend $1,200 to generate 60 form submissions → CPL = 1,200 ÷ 60 = $20 per lead.
Why it matters
CPL is only half the story — a cheap lead that never becomes a customer is expensive. Track CPL alongside lead-to-customer rate to know your true cost per customer.
Put these metrics to work
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FAQ
What is a good cost per lead?
It's relative to lead value — a B2B lead worth thousands can justify a $100+ CPL, while a low-ticket offer needs single-digit CPLs. Compare to your close rate and deal size.
How do I lower CPL?
Tighten targeting, reduce form friction, improve offer relevance, and use conversion-optimized bidding with proper conversion tracking.