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ROI Calculator

How much is your slow
site costing you?

Enter your numbers. See the revenue you're losing to slow load times and the ROI of a faster, optimized website.

How the ROI calculator works

1

Input your numbers

Enter your current traffic, conversion rate, and average order value. These are numbers most businesses already track through Google Analytics or their ecommerce platform. No guessing, we work with your real data.

2

Model the improvement

We apply realistic improvement ranges based on what we've seen across 5,000+ site optimizations. Speed improvements, better mobile UX, and SEO gains each contribute to a projected conversion lift, typically 15-30% combined.

3

Project 12-month ROI

The calculator generates a month-by-month revenue projection, break-even timeline, and total ROI percentage. You see exactly when the investment pays for itself and what the cumulative return looks like over a year.

Treating your website like a business investment

Most businesses wouldn't spend $15K on new equipment without calculating the payback period. Yet website investments are routinely approved based on gut feel, competitor pressure, or because "the old site looks dated." That's backwards. Your website is a revenue-generating asset with a measurable return, it deserves the same financial rigor as any other capital expenditure.

The challenge is that website ROI is distributed across multiple channels. A faster site improves organic rankings (more traffic), reduces bounce rates (more engaged visitors), and increases conversion rates (more revenue per visitor). Each of these individually might look marginal, a 5% traffic increase here, a 0.3% conversion rate improvement there. But they compound. A site that loads in 1.5 seconds instead of 4 seconds, with proper SEO and clean mobile UX, routinely generates 25-40% more revenue than its predecessor.

We built this calculator after too many sales conversations where the question was "how much does a new site cost?" when the real question should have been "what will the return be?" The answer almost always surprises people. A $12K investment that generates $4K per month in additional revenue has a 400% annual ROI. Good luck finding that kind of return in your ad spend.

Frequently asked questions

What assumptions does the calculator use?
The model assumes a 15-30% combined improvement in conversion rate from faster page speed, better mobile UX, and SEO optimization. These ranges come from published research (Google, Deloitte, Akamai) and our own client data across 5,000+ site projects. The projection is conservative, we use the low end of each improvement range to avoid overpromising.
How accurate is the ROI projection?
Think of it as a business case, not a guarantee. Our clients typically see results within 20% of the projection, some exceed it, particularly ecommerce sites where speed improvements directly affect cart abandonment. Content-focused sites sometimes take longer to see the full SEO benefit. The projection is most accurate when you input real data rather than estimates.
When does a rebuild make sense versus optimization?
Optimization is the right call when your core architecture is sound but performance has degraded, things like image compression, caching, removing unused plugins. A rebuild is warranted when your platform is the bottleneck: WordPress sites that can't get below 3-second LCP despite optimization, CMSes that don't support modern image formats, or monolithic architectures that can't be partially updated. If your optimization ceiling is still above 2.5-second LCP, a rebuild usually pays for itself faster.
What factors most affect website ROI?
Page speed has the highest measurable impact because it affects every visitor on every page load. After that: mobile experience (60%+ of traffic is mobile for most sites), SEO improvements (more traffic at zero marginal cost), and conversion rate optimization (better copy, clearer CTAs, reduced friction). The combination matters more than any single factor, a fast site with confusing navigation still converts poorly.

More from the TRIBE v2 toolkit

Speed Impact Calculator

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Migration Quiz

Answer 8 questions to find out if migrating to a modern stack is worth it, with timeline and risk analysis.

SEO Site Scanner

Instant SEO audit with scoring across title tags, meta descriptions, content quality, and technical factors.
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