CMP Performance Calculator

Yes, completely free with no sign-up required. You can run as many calculations as you like.

The estimates are based on typical configurations and publicly available data for each CMP. Actual performance varies depending on your specific setup, configuration, and the number of vendors loaded. Use these numbers as a directional guide rather than exact measurements.

INP is a Core Web Vital metric that measures how quickly your website responds to user interactions like clicks, taps, and key presses. A lower INP means a more responsive site. Google uses INP as a ranking signal, so a heavy CMP that increases INP can hurt your SEO.

Yes. Google uses Core Web Vitals (including INP and Largest Contentful Paint) as ranking signals. A CMP that adds significant JavaScript execution time and network requests can negatively impact these metrics, which may lower your search rankings.

Use Chrome DevTools Performance tab or Lighthouse to measure your site with and without your CMP loaded. You can also check Google PageSpeed Insights or the Chrome UX Report for real-world Core Web Vitals data from your actual visitors.