# 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

**Revenue impact model**

Example

Current LCP **3.2 s**

−34%  
Target LCP **2.1 s**

Projected monthly revenue **+$18.4k**

BaselineAfter optimization

LCP change **−1.1 s**

Est. uplift **+4.6%**

Projected annual **$221k**

Start with your real-user baseline

Enter a website to load its mobile and desktop LCP from the Chrome UX Report.

Website Domain

Calculate ROIUse sample baseline

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

### 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.

### 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.