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Growth
Website Loading Cost Calculator
Estimate revenue lost from slow page load times.
Site & performance
%
$
sec
sec
Impact
Conversion drop
17.5%
Current revenue
$154,688
Potential revenue
$187,500
Monthly revenue lost
$32,813
$393,750 / yr
Model: each second above your target load time reduces conversions by ~7% (Google/Akamai benchmarks).
About this tool
See how much revenue you're losing to slow load times. Enter visitors, conversion rate, order value and load times — the tool applies the industry rule of ~7% conversion drop per extra second.
What it does
- •Load-time delta modeling
- •Conversion drop %
- •Monthly revenue lost
- •Annualized impact
Use cases
- ★Performance investment cases
- ★Core Web Vitals ROI
- ★PageSpeed optimization
FAQ
Where does the 7% rule come from?
Google and Akamai's ecommerce studies find each extra second above ~2s reduces conversions by roughly 7%.
Is this exact?
No — it's a directional estimate. Real impact depends on your industry, device mix and page type.