Page Speed Revenue Calculator

Page speed directly impacts ecommerce revenue. Research consistently shows that each additional second of load time reduces conversion rates by 7 to 12 percent. A site loading in 4.5 seconds versus 2 seconds is leaving significant revenue on the table every single month — and the impact compounds as traffic increases.

This calculator models conversion rate at different load times using industry-standard decay curves, then shows the revenue impact for your specific traffic and AOV. The table compares your current load time against faster scenarios so you can see exactly how much money improving speed would generate. For most ecommerce sites, getting from 4+ seconds to under 2.5 seconds is worth tens of thousands in annual revenue.

Mobile speed is particularly critical — over 60% of ecommerce traffic is mobile, and mobile networks add latency that makes slow sites feel even slower. Google also uses Core Web Vitals as a ranking factor, meaning slow sites get less organic traffic on top of lower conversion rates from the traffic they do get.

The highest-impact speed improvements for Shopify and ecommerce sites are image optimization (WebP format, lazy loading, proper sizing), reducing third-party scripts (each analytics or marketing tag adds load time), using a CDN, minimizing app bloat, and enabling browser caching. Most stores can cut 1 to 2 seconds of load time with image optimization alone. Use this calculator to quantify the revenue case for speed improvements and prioritize them against other CRO initiatives.