How is annual loss calculated in the ROI calculator?

Annual revenue = monthly traffic × current conversion rate × average order (or lead) value × 12. The conversion you enter is the current state (e.g. from GA4). Uplift after speeding up uses a non-linear (saturating) Google/SOASTA model, capped at +35%. The displayed figure estimates the gain from reaching ~1.0s LCP (LykKreacji target). “Maximum potential” is the ceiling at 0.6s LCP. Google’s “good” LCP threshold is 2.5s — if the site is already fast, loss is 0.

Where does the website audit data come from?

URL audit uses Google PageSpeed Insights (Lighthouse). When the API is unavailable, we show an error and a retry option — never fake metrics.

Is the calculator result a revenue guarantee?

No. It is an indicative model based on speed–conversion correlation (Google, Deloitte). It estimates potential technology-related loss.

What does the PDF report include?

Business parameters, estimated annual loss, performance audit results (if URL provided), and Next.js optimization recommendations.

Access to Calculators

Choose the right tool for your needs — from quick quotes to advanced ROI analysis

Project Quote

Simple calculator & AI analysis

For you if: you want to hear a price in 2 minutes

Open

ROI Calculator

How much do you lose due to a slow site?

For you if: you want to calculate how much you're losing

You are here

Configurator + AI

Full page with both calculators

For you if: you want a full interactive quote

Open

LykKreacji — Tworzenie Stron WWW Wrocław & Kłodzko

Strona wymaga JavaScriptu do pełnej funkcjonalności. Masz problem z ładowaniem?

czesc@lykkreacji.pl | +48 790 629 497

Specjalizacja: Next.js 16, SEO, konwersja, strony firmowe, sklepy e-commerce, aplikacje webowe.

Oszacuj koszt i zysk z nowej strony

Project Quote

ROI Calculator

Configurator + AI

Oszacuj koszt i zysk z nowej strony

Project Quote

ROI Calculator

Configurator + AI