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Unique Add to Carts counts the number of sessions where at least one product was added to the cart, regardless of how many items were added during that session.

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Formula

Unique Add to Carts = COUNT ( Sessions with Add to Cart )

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Formula Components

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Example

Your store had 2,847 unique add-to-carts last week, meaning 2,847 separate visitor sessions included at least one add-to-cart action. In this example, Monday had 1,245 total add-to-cart events but only 892 unique sessions with add-to-carts — some visitors added multiple products during their session.

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How It Works

Each session can fire multiple add-to-cart events when visitors add different products or quantities. Unique Add to Carts deduplicates these events at the session level, counting each session only once regardless of how many items were added. This gives you a cleaner view of shopping intent without inflation from multi-item carts.

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When to Use

See all Engagement metrics →