ATC to IC Rate: Cart to Checkout Conversion

ATC to IC Rate measures the percentage of add-to-cart events that progress to initiate checkout.

Formula

ATC to IC Rate = ( Initiate Checkouts ÷ Add to Carts ) × 100

Formula Components

Metric	Definition
Initiate Checkouts	Total checkout initiation events tracked
Add to Carts	Total add-to-cart events tracked

Metadata
Type	Percentage
Data Source	Upstack Pixel
Aggregation	Ratio

Example

Your store tracked 1,521 add-to-cart events in January, with 912 progressing to checkout.

Metric	Value	Calculation
Add to Carts	1,521	Items added to cart
Initiate Checkouts	912	Checkout starts
ATC to IC Rate	60.0%	(912 ÷ 1,521) × 100

How It Works

ATC to IC Rate calculates the conversion between cart addition and checkout initiation. The Upstack Pixel tracks add-to-cart events when visitors add products and initiate checkout events when they begin the checkout process.

When to Use

Scenario	Action
Cart experience audit	Identify friction preventing checkout starts
Shipping threshold testing	Measure impact of free shipping offers
Trust signal optimization	Test security badges, reviews, guarantees
Mobile vs. desktop analysis	Compare checkout intent by device

Metric	Relationship
Add to Carts	Denominator — cart additions
Initiate Checkouts	Numerator — checkout starts
Add to Cart Rate	Previous funnel step — views to cart
Checkout Conversion Rate	Next funnel step — checkout to purchase

See all Engagement metrics →

IC Rate Total Events

⌘I

​Formula

​Formula Components

​Example

​How It Works

​When to Use

​Related Metrics

Formula

Formula Components

Example

How It Works

When to Use

Related Metrics