Cart Abandonment Rate Calculator
Calculate the percentage of shopping carts started but not completed, and the estimated revenue left on the table.
Your results
Calculation breakdown
- Abandoned carts
- Carts created − Carts completed
- Abandonment rate
- (Abandoned carts ÷ Carts created) × 100
- Lost revenue estimate
- Abandoned carts × Average order value
Worked example
A store with 1,000 carts created and 320 completed has a 68% abandonment rate, an estimated $61,200 in lost revenue at a $90 average order value.
Assumptions
- Not every abandoned cart would have converted, so lost revenue is an estimate.
- Common causes include unexpected shipping costs and a complicated checkout.
- Track this over time to measure the effect of checkout improvements.
How this calculator works
Enter the number of carts created and the number that completed checkout to see your abandonment rate, plus an estimate of lost revenue based on your average order value. Use it to prioritise checkout improvements or abandoned-cart email campaigns.
Frequently asked questions
What causes high cart abandonment?
Common causes include unexpected shipping costs, a complicated checkout process, mandatory account creation and limited payment options.
How is lost revenue estimated?
It multiplies the number of abandoned carts by your average order value, though not every abandoned cart would have converted anyway.
What's a typical abandonment rate?
Many online stores see abandonment rates above 60-70%, so focus on the trend over time rather than a single external benchmark.
Results are estimates only and are not financial, tax, legal or credit advice.