Cart to Purchase Rate: Measure Checkout Completion

Cart to Purchase Rate measures the percentage of shoppers who complete a purchase after adding items to their cart.

Formula

Cart to Purchase Rate = ( Purchases ÷ Add to Carts ) × 100

Formula Components

Metric	Definition
Purchases	Total number of completed purchases tracked by the pixel
Add to Carts	Total number of add-to-cart events tracked by the pixel

Metadata
Type	Percentage
Data Source	Upstack Pixel
Aggregation	Ratio

Example

Your Shopify store tracked 2,847 add-to-cart events and 712 purchases last month.

Metric	Value
Add to Carts	2,847
Purchases	712
Cart to Purchase Rate	25.0%

A 25% cart to purchase rate means 1 in 4 shoppers who add items to cart complete a purchase.

How It Works

Cart to Purchase Rate is calculated by dividing the total number of completed purchases by the total number of add-to-cart events, then multiplying by 100. This metric tracks events captured by the Upstack Pixel and reflects the efficiency of your checkout funnel.

When to Use

Scenario	Action
Checkout optimization	Identify friction points causing cart abandonment
A/B testing	Compare checkout flow variants by conversion rate
Seasonal analysis	Track how purchase intent varies by period
Campaign evaluation	Measure if traffic quality affects checkout completion

Metric	Relationship
Add to Carts	Numerator component — total cart additions
Purchases	Denominator component — completed transactions
Conversion Rate	Similar funnel metric — sessions to purchases

See all Conversions metrics →

​Formula

​Formula Components

​Example

​How It Works

​When to Use

​Related Metrics

Formula

Formula Components

Example

How It Works

When to Use

Related Metrics