Free Shopify tool
How much is slow speed costing your store?
Plug in your numbers below. Math uses Google\'s documented relationship between page speed and conversion \u2014 every 1-second LCP improvement is worth ~7% more CVR.
+7%
CVR per 1s LCP win
4
Inputs, no signup
$0
Cost, always
Your numbers
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What you could be earning
Projected lift if you improved your Lighthouse score. Math uses Google's documented +7% CVR per 1s LCP improvement, capped at +50% to stay realistic.
At Lighthouse 70
$75,600
extra revenue per year
At Lighthouse 80
$105,000
extra revenue per year
At Lighthouse 90
$134,400
extra revenue per year
These are projections based on industry-wide research. Real results vary by category, traffic mix, and product. Use them as an order-of-magnitude check, not a guarantee.
Now what
The 9 fixes that actually improve Lighthouse — emailed to you.
Our 12-minute speed-optimization playbook. The exact checklist we run on every paid engagement. Free, no drip emails.
Or get a personalized audit: Free Shopify audit →
Under the hood
How the math works
This is a model, not a guarantee. But the direction and magnitude are real \u2014 multiple peer-reviewed studies have replicated the same +7% CVR per 1s LCP relationship.
Google's +7% CVR per 1s LCP rule
Multiple peer-reviewed studies (Google's 2018 retail study, Deloitte's 2019 “Milliseconds Make Millions” report) found a near-linear +7% conversion lift for every 1-second LCP improvement.
Lighthouse score → LCP curve
Lighthouse scores correlate tightly with LCP. We use the documented mapping (e.g. score 50 → ~5.0s LCP, score 90 → ~1.8s) to project realistic upgrade paths.
Back-calculated visitors
We don't guess your traffic. The calculator derives monthly visitors from revenue ÷ (CVR × AOV) so the projection scales with your real funnel.
Capped at +50% lift
Real-world results plateau. We cap the projected CVR lift at +50% so the numbers stay grounded — not the “what if speed was infinite” math.
Sources: Google\'s 2018 retail / speed study, Deloitte\'s 2019 \u201CMilliseconds Make Millions\u201D report, and dozens of follow-up replications. Real-world results vary by category, traffic source, and customer behavior \u2014 use this as an order-of-magnitude check, not a forecast.
Want to actually capture that revenue?
Get a real audit of your store, or jump straight into a fixed-price speed sprint. We ship every fix in the report in 5\u20137 days.