Page Speed Impact Estimator
Calculate revenue impact of site speed improvements
Estimate the revenue and conversion uplift from improving your website load time. Based on Google and industry research on speed-conversion correlation.
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What is a Page Speed Impact Estimator?
Every second of page load time costs you conversions. Google research shows that a one-second delay in mobile load time reduces conversion rates by up to 20%. Amazon found that 100ms of latency cost them 1% in sales — at their scale, that is hundreds of millions of dollars. For Indian websites, where 60–70% of traffic is on mobile networks (often 4G but with high latency), speed is even more critical.
This free page speed impact estimator translates load time improvements into business outcomes. Enter your current load time, target load time, monthly traffic, conversion rate, and average order value to see the estimated revenue uplift from a faster site.
Use it to build the business case for Core Web Vitals optimization, CDN investment, or image compression work. Show stakeholders exactly how much a 2-second improvement could be worth in monthly revenue.
Why use this Page Speed Impact Estimator
Built for Indians, by Indians. Every number, every formula, every slab — tuned to FY 2026-27 reality.
Revenue Uplift Calculator
Translates speed improvements into estimated monthly revenue gain.
Mobile-first
Calibrated for Indian mobile web where speed impact is amplified.
Conversion Rate Delta
Shows expected conversion rate improvement from speed gains.
100% Private
All math runs in browser. Nothing stored.
Using the Page Speed Impact Estimator in 4 steps
No onboarding, no signup. Answer three fields and the numbers update live.
Find your current load time
Run PageSpeed Insights (pagespeed.web.dev) on your key landing pages. Use the LCP (Largest Contentful Paint) metric.
Enter traffic and conversion data
Monthly visitors, current conversion rate, and average order value from Google Analytics and your store backend.
Set target load time
Google recommends LCP under 2.5s. If you are at 5s, targeting 3s is a realistic first step.
Review revenue uplift
The estimated monthly revenue gain helps you justify the cost of speed optimization work to stakeholders.
Tips to get the most out of it
Fix the biggest wins first: compress images (WebP format), enable browser caching, and use a CDN. These alone often cut 2–3 seconds.
Test speed on a real 4G connection, not your office WiFi — most Indian users are on mobile networks.
Focus on LCP (Largest Contentful Paint) and INP (Interaction to Next Paint) — these are the Core Web Vitals that Google actually uses for ranking.
Lazy-load all images below the fold. Only the hero image needs to load immediately.
Remove unused JavaScript and CSS — each render-blocking resource adds 50–200ms on mobile.
Real-world scenarios
How Indians actually use this estimator — concrete inputs, concrete outcomes.
E-commerce site, 5s → 3s
Monthly visits: 50,000. Current CR: 2%. AOV: ₹1,200. 2s improvement × 7% = ~14% CR uplift. New CR: 2.28%. Revenue gain: ~₹1.68L/month.
Lead gen site, 6s → 3s
Monthly visits: 20,000. Current CR: 3%. 3s improvement × 7% = 21% uplift. New CR: 3.63%. Additional leads/month: 126. At ₹500 CPL, that is ₹63,000 in saved acquisition cost.
Already fast site, 2.5s → 1.5s
Diminishing returns at the fast end. 1s improvement still yields ~7% uplift, but the absolute gain depends on existing volume. Worth it for high-traffic sites.
Frequently Asked Questions
Still have a question? Our team replies within a business day.
From Google research published in their Think with Google studies, and corroborated by Portent (2019) and Deloitte research. The exact number varies by industry and baseline speed, but 5–10% per second is a widely cited range.
Google PageSpeed Insights (field data from real users), WebPageTest.org (detailed waterfall), and Lighthouse (Chrome DevTools). For Indian audiences, test from an Indian server location.
Largest Contentful Paint measures when the largest visible element (usually a hero image or heading) finishes loading. Google uses LCP as a Core Web Vitals ranking signal. Target: under 2.5 seconds.
Yes. Core Web Vitals (LCP, INP, CLS) are ranking signals in Google Search since 2021. Fast pages rank better, especially on mobile searches.
Most Indian websites can go from 5–8s to 2.5–3.5s with image compression, CDN, and JavaScript cleanup. Sub-2s requires more advanced work (server-side rendering, edge delivery, code splitting).
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