Enter your carts, completed orders, and average order value. You'll get your abandonment rate against the industry average, the theoretical loss every vendor quotes, and the honestly recoverable figure sitting next to it for comparison.
The scare number and the honest number
Every cart abandonment tool leads with the same move: abandoned carts times average order value equals an enormous monthly figure, presented as money you are "losing." It is arithmetic in service of a sales pitch. The figure assumes every abandoned cart was a sale that would have happened, and the research has said otherwise for years: most abandoners were browsing, comparing prices, saving items for later, or finding out what shipping costs, and the industry-average abandonment rate has sat around 70% for as long as anyone has measured it. Abandonment is mostly what shopping looks like online.
So this calculator computes the scare number and then, right next to it, the honest one: only the carts you can actually email, recovered at the 3% to 5% rate recovery campaigns actually achieve. Both use your own inputs. The gap between them is usually one to two orders of magnitude, and knowing that gap is worth more than either number alone, because it tells you how much of a vendor pitch is arithmetic and how much is theater.
The formula
Abandonment rate = (Carts − Orders) ÷ Carts
Honest recovery = Abandoned × Email share × Recovery rate × AOV
The theoretical maximum drops the two middle terms, which is exactly why it comes out so large. The value of one point of abandonment improvement is carts × 1% × AOV.
Worked example
A store creates 5,000 carts a month and completes 1,500 orders: 3,500 abandoned, a 70% abandonment rate, sitting exactly on the industry average. Average order: $85.
The scare number: 3,500 × $85 = $297,500 a month in "lost revenue." The honest math: only 35% of abandoners are identifiable by email (1,225 carts), and recovery emails win back 3% to 5% of those, so the real recoverable figure is $3,123.75 to $5,206.25 a month. The scare number is 57 times the top of that range.
Meanwhile, cutting abandonment by a single point (say, showing shipping costs earlier) is worth 5,000 × 1% × $85 = $4,250 every month: comparable to the entire recovery-email program, before a single email is sent.
Where the points actually come from
Surveys of why shoppers abandon at checkout return the same list every year, and the top of it is never a mystery: extra costs revealed too late (shipping, taxes, fees) leads by a wide margin, followed by forced account creation, long or confusing checkouts, and payment or trust concerns. Each of those is a fixable point or three of abandonment, and the arithmetic above prices what a point is worth for your store, every month, forever.
None of this means recovery emails are a waste: three to five percent of reachable carts is real money at real margins, the emails are cheap to run, and a well-timed reminder is a service to the person who genuinely got interrupted. The honest conclusion is about order: fix the reasons people leave first, then chase the ones who leave anyway. A store that does it backwards pays for software to recover carts its own checkout is busy creating. And when you weigh that software, judge the subscription against the honest range this page computes, not the scare number on the vendor's homepage; our ROAS calculator will tell you what return the spend actually needs.
Frequently asked questions
How do I calculate my cart abandonment rate?
Divide completed orders by carts created, subtract from 1, and express it as a percentage. 5,000 carts and 1,500 orders is a 70% abandonment rate. Count only orders that came through the cart flow; buy-now buttons and renewing subscriptions belong to a different funnel.
What is the average cart abandonment rate?
Around 70%, a figure that has been remarkably stable across years of studies (Baymard Institute's running average of published research sits just above it). If your rate is near 70%, you are normal, not broken. Meaningfully above it usually points at checkout friction or costs revealed too late.
Is the lost revenue number from abandonment tools real?
It is real arithmetic applied to an unreal assumption: that every abandoned cart was a sale. Most abandoners were browsing, comparing, or checking shipping costs. The honest recoverable figure filters for the carts you can actually email and the 3% to 5% that recovery campaigns actually win back, and it is usually one to two orders of magnitude smaller.
What recovery rate do abandoned cart emails achieve?
Typically 3% to 5% of the abandoned carts they reach, with large benchmark datasets landing near the bottom of that range. Claims far above it usually measure something else, like clicks instead of completed orders, or count carts that would have converted anyway.
Why can I only email some of my abandoners?
Because a recovery email needs an email address, and a shopper who bounced before entering one is unreachable. Stores can typically identify 30% to 40% of abandoners: logged-in customers, newsletter subscribers, and people who got far enough to type their address. That single filter removes most of the theoretical revenue before the recovery rate even applies.
Why do shoppers abandon carts?
The same reasons every year, led decisively by extra costs revealed too late: shipping, taxes, and fees appearing at the last step. Forced account creation, long checkouts, and payment or trust concerns follow. Each is fixable, which is why a point of prevention tends to outearn a program of recovery.
Is it better to reduce abandonment or recover carts?
Reduce first, recover second. One point of abandonment improvement is worth carts times 1% times order value every single period, and in the worked example that rivals the entire recovery-email program. Recovery emails are still worth running; they are cheap and 3% to 5% is real money. The mistake is paying to recover carts your own checkout keeps creating.
Should I count checkout abandonment separately?
Yes, if you can. Cart abandonment includes everyone who added an item; checkout abandonment starts the clock at the first checkout step, where intent is far higher and every loss hurts more. The same math here works for either; just be consistent about which funnel your carts and orders describe.