Speed Cost Calculator
How much revenue is your slow website burning every month?
Every extra second of load time costs you conversions. Enter your URL and traffic numbers — we'll measure your real Core Web Vitals and calculate the dollar cost of every millisecond.
Don't know your numbers? The defaults work for most small businesses.
The math
Real data. Real research. Real numbers.
We measure your actual LCP, FCP, TBT, CLS, and Speed Index — the same metrics Google uses to rank your site.
Based on published data from Google, Portent, and Deloitte: each 100ms of load time above 1 second costs ~1% conversion rate.
Your traffic × your lead value × the measured speed penalty = the actual dollar amount leaving the table every month.
Why speed kills (revenue)
The data is brutal. And your competitors know it.
of mobile visitors leave if a page takes longer than 3 seconds to load.
conversion rate drop for every additional second of load time.
in annual revenue lost by US retailers to slow websites (Akamai).
Stop the bleed
You now know the cost. The question is how long you're willing to keep paying it.
A performance-focused build or optimization sprint can cut load times by 60-80%. The ROI math usually pays for itself in the first month.