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Performance impact modeling

Website Performance ROI Calculator

Calculate the potential ROI of a faster website. Model conversion uplift, monthly revenue gain, and annual business impact using your traffic and sales data.

  • CrUX-powered baseline
  • Editable business model
  • Revenue impact forecast
Start with your real-user baseline
Enter a website to load its mobile and desktop LCP from the Chrome UX Report.

What we'll fetch:

Mobile LCP
Desktop LCP

We'll use mobile data if available, otherwise desktop data.

Baseline data powered by the Chrome UX Report

Connect speed to growth

Calculate website performance ROI

Model the business case with your own audience, conversion rate, order value, and optimization costs.
01

Start with a real performance baseline

The calculator can use Chrome UX Report data for your current Largest Contentful Paint, giving the model a real-user starting point instead of a synthetic assumption. You can switch between available mobile and desktop data, then set the LCP target you expect to reach.

02

Build a transparent revenue model

Adjust traffic, conversion rate, average order value, monitoring cost, and one-time optimization spend to see the projected monthly and annual impact. Every input remains visible and editable, so the forecast can match the economics of your site.