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Cost per Login measures the average ad spend required to generate one login event on your site.

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Formula

Cost per Login = Channel Spend ÷ Logins

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Formula Components

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Example

Your store spent $5,000 on ads in January and tracked 2,500 login events.

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How It Works

The Upstack pixel captures login events when visitors authenticate on your site. Cost per Login divides your total ad spend by the number of login events, showing how efficiently your ads drive authenticated engagement. Lower values indicate more cost-effective campaigns at re-engaging existing customers.

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When to Use

See all Engagement metrics →