Real-world use cases
The shipping-shock leak
Completion drops sharply at the shipping step.
The calculator sizes the lost revenue, justifying showing shipping earlier or setting a free-shipping bar. Result: fewer surprises, more completions.
The mobile checkout problem
Desktop completes fine; mobile does not.
Quantifying the gap prompts express-pay and a shorter mobile form. Result: recovered mobile orders.
Why the checkout step is the costliest leak
A shopper who has reached checkout has already chosen a product, added it to cart, and started the process of paying. They are the most committed visitors your store produces, so losing them here wastes everything you spent to get them this far. That makes the checkout step uniquely expensive to leak, and uniquely rewarding to fix, because the shoppers are already sold on the product and are leaving over friction, not desire.
What this tool isolates, and what it does not
This calculator focuses on one thing: the conversion of the checkout step itself, from reaching checkout to completing the order. That is deliberately narrower than the whole funnel and different from recovering people after they leave. To see where visitors drop across the entire journey from session to order, use our Revenue Leak Calculator. To size and win back the ones who abandon after starting checkout through email and SMS, use the Abandoned Checkout Revenue Calculator. This tool tells you how much the checkout step alone is costing and what a completion improvement is worth.
The usual sources of checkout friction
Checkout leaks almost always trace to a short list of friction points: unexpected shipping costs revealed late, forced account creation, too few or slow payment options, a long or confusing form, and no express or wallet payment on mobile. Each adds a moment of hesitation at the exact point where hesitation is most expensive. Removing them lifts completion without touching your traffic or product.
Small percentage, large money
Because checkout completion acts on your most ready buyers, a few points of improvement translate into real revenue, which is why the recoverable figure here often surprises owners. Set a realistic target completion after removing the obvious friction, and the number the calculator returns is your business case for prioritizing checkout work.
Further reading from Digital Success
- Shopify SEO services — send more ready-to-buy traffic into a smoother checkout
A smoother checkout is money you already earned
Every other growth lever, more traffic, better product pages, sharper ads, exists to get shoppers to the checkout. When they arrive and leave over avoidable friction, you lose the return on all of it at once. Fixing checkout is not glamorous, but it is among the highest-return work a store can do, because it recovers revenue from visitors you have already fully paid to acquire and persuade. The hard part is diagnosing the specific friction and removing it without breaking the flow.
Digital Success helps Shopify brands find and fix checkout and conversion friction, and fills the funnel with better-qualified traffic through our Shopify SEO services, so more ready buyers reach a checkout built to convert. Let us help you seal the checkout leak.
Frequently asked questions
Why is my Shopify checkout not converting?
What is a good Shopify checkout completion rate?
How is checkout leak different from cart abandonment?
How do I improve checkout completion?
Should I fix the funnel or the checkout first?
Can Digital Success fix my checkout?
This tool provides illustrative estimates for planning and does not guarantee results. The formulas are shown above so you can check the math yourself. Last reviewed September 2026 by the Digital Success ecommerce team.
Recover your most ready-to-buy shoppers
Checkout friction wastes everything you spent to get there. Digital Success finds and fixes it, and fills the funnel with qualified traffic. Let us review your checkout free.
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