Site speed ROI calculator
How much your store can gain per month by making LCP faster, with your own numbers. Nothing leaves your browser.
Your numbers
Visitors per month50,000
Conversion rate (%)1.5
Average order value (USD)80
Current LCP (s)4
Target LCP (s)2.5
Conversion gain per 0.1 s (%)1
Result
Revenue per month today
$60,000
Estimated gain per month
+$9,000
15 steps of 0.1 s × 1% = 15% more conversions. Over 12 months: $108,000.
Estimate from the parameters entered, not a guarantee. Reference: Deloitte and Google, "Milliseconds Make Millions" (2020): 0.1 s faster on phones brought up to 8.4% more retail conversions. Want this on every page, every day, with an alert when it gets worse? Run the free site check · See plans
Related guides
Core Web Vitals: what LCP, INP and CLS are and how to improve them
What LCP, INP and CLS measure, the good and poor thresholds, how Google uses these metrics in Search and where to find your site's data.
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