Today: 1,000 orders/month, $80,000/month at a 1% conversion rate.
| Lift | New CVR | Extra orders / mo | Add'l rev / mo | Add'l rev / yr | Add'l margin / yr |
|---|---|---|---|---|---|
| +10% | 1.10% | 100 | $8,000 | $96,000 | $48,000 |
| +15% | 1.15% | 150 | $12,000 | $144,000 | $72,000 |
| +25% | 1.25% | 250 | $20,000 | $240,000 | $120,000 |
Conversion is the only lever that doesn't cost more money
There are three ways to grow: more traffic, bigger orders, or a better conversion rate. The first gets more expensive every year. The second has a ceiling set by your catalogue. The third is free once you find it — the same traffic, the same ad spend, more customers. This calculator prices that third option on your actual numbers, because "improve your conversion rate" is abstract until it has a dollar figure and a comparison against what you're already spending on media.
How it's calculated
We use relative lift, not percentage points, because that's how test results are reported: a 15% lift on a 1.0% conversion rate takes you to 1.15%, not 16%. Extra orders = current orders x lift. Multiply by AOV for revenue, by 12 for the annual figure, and by gross margin for what reaches the bottom line. Example: 100,000 sessions at 1.0% converting produces 1,000 orders and $80,000 a month. A 15% lift adds 150 orders, $12,000 a month, $144,000 a year in revenue and $72,000 in margin. No additional media spend.
Why 15% is the number we use
It's the bar we hold ourselves to. Fifteen percent more customers from existing traffic is achievable in most stores we look at, because the leaks are rarely subtle once tracking is clean — a checkout step nobody tested on mobile, a product page missing the answer to the one objection that matters, ad spend flowing to paths that convert worst. It's also a threshold with an obvious business case: at the numbers above, a 15% lift funds an entire optimization program several times over. Compare that against the cost of buying an equivalent number of customers with media.
How to get there
Lift comes from finding the specific step that's losing people, changing it, and measuring the result — in that order. Guessing at redesigns produces motion, not lift. Start by locating the leak in dollars with the ecommerce funnel calculator, then check that the traffic you're optimizing is even profitable at your margin using the break-even ROAS calculator. One caution on this page's math: it assumes lift applies evenly across your traffic. Real lifts are usually concentrated — a checkout fix helps mobile paid social far more than desktop email — which is why the same test result is worth different amounts depending on where it lands.
Frequently asked questions
Multiply your current orders by the relative lift to get extra orders, then multiply by AOV for revenue and by gross margin for profit. Compare the annual figure against the cost of the optimization program. Because the incremental orders require no additional media spend, the margin figure is the honest basis for the comparison.
For most stores that have never run a structured optimization program, yes — the early wins tend to be structural rather than clever, like checkout friction, unclear shipping costs, or product pages that don't answer the main objection. Lifts get harder to find as the obvious problems get fixed.
A relative 15% lift on a 1.0% conversion rate produces 1.15%. An absolute 15-point lift would mean 16%, which is not a real-world result. Test platforms report relative lift, and so does this calculator.
Conversion, when you have meaningful traffic already, because the gain applies to everything you're buying and doesn't raise your acquisition cost. Traffic growth makes sense once the funnel converts efficiently — scaling spend into a leaking funnel just spends more to lose the same percentage.
Finding the leaks takes weeks, not months, once tracking is trustworthy. Implementing and validating changes takes longer, because a test needs enough traffic to reach a conclusion you can rely on. A realistic horizon for a first measured lift on a store at reasonable volume is one quarter.
More free tools
Ecommerce Funnel Calculator
See where your store leaks profit from session to purchase — in dollars per month.
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What a customer is really worth, your LTV:CAC ratio, and how many months until ad spend pays back.
