Quick answer
How do you calculate Cart Abandonment?
Use Cart abandonment = (Initiated carts − Purchases) ÷ Initiated carts × 100. Enter the matching values above to calculate the result instantly.
What it measures
Understanding Cart Abandonment
Measure the percentage of initiated shopping carts that did not become purchases. Unexpected shipping, forced accounts, payment friction, comparison shopping, and low-intent cart use can all contribute.
Interpretation
What the result means
A 68% result means 68 of every 100 initiated carts did not complete a purchase in the measured flow.
Action
How to use it
Inspect abandonment by checkout step and device, then test the highest-friction issue without masking it with discounts.
Limits
What it leaves out
Cross-device journeys, cookie loss, repeat carts, and different cart-start events can distort the calculation.
The math
Cart Abandonment formula
Worked example
Example calculation
- Calculation
- (5,000 − 1,600) ÷ 5,000 × 100
- Result
- 68% cart abandonment
Step by step
How to use this calculator
- 1Enter initiated carts, completed purchases.
- 2Keep every input on the same time period and measurement basis.
- 3Review the result, then change one assumption at a time to test scenarios.
Decision support
When this calculator is useful
- Checkout optimization
- Recovery campaign planning
- Funnel diagnostics
Common questions
Frequently asked questions
Which inputs should I use for Cart Abandonment?
Use initiated carts, completed purchases, measured from the same source and period. Include only values that match the definitions shown beside each field.
Why might two Cart Abandonment calculations differ?
The systems or accounting policies may define initiated carts, completed purchases differently. Compare the time period, scope, source, and treatment of exceptional items before comparing results.
How often should I recalculate Cart Abandonment?
Recalculate when any input changes materially and on the same reporting cadence used for the decision. Save the source and date of each input so the trend remains comparable.
Can I use Cart Abandonment by itself?
No single metric captures the full decision. Use the result with the related measures, assumptions, and limitations shown on this page.
Calculation reviewed: 2026-06-18. CalcPilot uses the formula shown above and tests representative values during the production build. See our methodology and correction policy.
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