Cart Abandonment Rate Calculator

Cart abandonment rate is the percentage of shopping carts that are created but never result in a completed purchase. It is calculated as one minus completed purchases divided by carts created, expressed as a percentage.

Divide completed purchases by carts created to get your completion rate, then subtract that from 100%. For example, 300 purchases from 1,000 carts is a 30% completion rate and a 70% abandonment rate.

Across ecommerce, average documented cart abandonment rates sit around 70%, though they vary by industry and device. Mobile and high-consideration purchases tend to see higher abandonment, so compare against your own trend rather than a single benchmark.

Common causes include unexpected shipping costs, forced account creation, a long or confusing checkout, limited payment options and concerns about security. Many shoppers also add items to compare prices or save for later with no intent to buy yet.

That is invalid: you cannot complete more purchases than carts created, so the tool reports an error rather than a negative abandonment rate. Make sure both figures cover the same period and that purchases are counted from the same carts.