Performance calculator.

Estimate the business impact of performance improvements and Core Web Vitals. Use it to justify optimization work with real numbers.

Built on Core Web Vitals research

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Estimate impact in minutes

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Runs locally in your browser

Website performance calculator

Calculate the revenue impact of optimizing your website performance

Performance Metrics

Current LCP (seconds)

Current INP (milliseconds)

Current CLS

Business Metrics

Monthly Visitors

Conversion Rate (%)

Average Order Value ($)

Every Second Costs You Money

Website speed isn't just a technical metric—it's your revenue engine. Here's exactly how performance impacts your bottom line.

73%

Users abandon slow sites

after 3 seconds

25%

Revenue increase

per 1s improvement

$2.6B

Amazon would lose

with 1s delay

What We Measure & Why It Matters

Google's Core Web Vitals directly impact your search ranking and user experience

Loading Speed

LCP

< 2.5s

How fast your main content appears

-7% conversions per second delay

Interactivity

INP

< 200ms

How quickly users can interact

+24% bounce rate when poor

Visual Stability

CLS

< 0.1

How stable your layout is

89% of users frustrated by shifts

How We Calculate Your Potential Revenue

Our calculations are based on real-world data from Google, Akamai, and 100+ optimization projects

Performance Impact

We apply proven conversion improvement rates: 7% increase per second faster load time, based on Google's extensive research and industry benchmarks.

Revenue Calculation

Your traffic X improved conversion rate X average order value = potential monthly revenue increase from performance optimization.

Conservative Estimates

We use conservative multipliers (50-80% of theoretical maximum) to ensure realistic projections based on actual client results.

Ongoing Benefits

Performance improvements compound over time through better SEO rankings, reduced bounce rates, and increased customer lifetime value.

Data sources: Google Core Web Vitals research • Akamai performance studies • 100+ client optimization projects

Frequently Asked Questions

Get answers to common questions about Core Web Vitals, page load times, conversion rate impact, and how to calculate the ROI of performance improvements.

Enter your current site metrics (load time, bounce rate, monthly visitors, average order value). The calculator will show potential improvements in Core Web Vitals and estimate revenue impact. You can adjust performance improvement sliders to see different scenarios and their projected ROI.

LCP (Largest Contentful Paint) measures loading - how long your main content takes to appear. INP (Interaction to Next Paint) measures responsiveness - how quickly your page reacts across user interactions. CLS (Cumulative Layout Shift) measures stability - whether elements jump around during loading. Lower is better for all three.

The calculator uses published research and common relationships between speed and conversion. It combines your inputs to show directional impact and help with planning. Use the result as an estimate, then validate with your own analytics.

Check Google PageSpeed Insights, Core Web Vitals report in Google Search Console, or Google Analytics 4. For bounce rate and conversion data, use Google Analytics. If you don't have exact numbers, the calculator includes industry averages you can use as starting points.

Results are directional estimates. Actual impact depends on your audience, product fit, and the rest of the user journey. Use the outputs for planning, then validate with real measurements.

Conservative: basic optimizations like image compression and caching. Moderate: code optimization and modern loading patterns. Aggressive: larger architecture changes. The scenarios help you compare potential paths, not predict exact outcomes.