Calculator

Site Speed → Conversion Impact
calculator.

Estimate conversion lift from improving page-load speed.

How we calibrated this
We use this to justify perf engagements.
Inputs

Tell us about your project.

This is a static reference card. For interactive calculators, talk to us — we tune the assumptions per client.

Current LCP (seconds)

Range: 1–15 s · Default: 4.5 s

Target LCP (seconds)

Range: 1–10 s · Default: 1.8 s

Monthly visitors

Range: 1000–5000000 visitors · Default: 50000 visitors

Current conversion rate

Range: 0.1–20 % · Default: 2 %

Avg conversion value (USD)

Range: 1–5000 USD · Default: 100 USD

How it's calculated

The formula.

Approx 7% conversion lift per 1s improvement in LCP × monthly volume

Output

Estimated conversion lift

Additional conversions per month.

Output

Estimated revenue lift

Monthly revenue increase.

Output

Annual revenue lift

12-month projection.

Want a real estimate?

This is a band,
not a quote.

For a real estimate calibrated to your specific project, brief us. We get back within two business days.

Brief us on a perf audit
Other calculators
AI App Build Cost CalculatorEstimate the cost to build a production-grade AI feature — RAG, fine-tuned model, or agentMarketing Site Redesign Budget CalculatorEstimate the cost of a brand-led marketing site redesignMobile App Build Cost CalculatorEstimate iOS + Android app development cost — native or React NativeBrand Identity Cost CalculatorEstimate the cost of a full brand identity — naming, marks, type, color, brand bookSEO Engagement Budget CalculatorEstimate budget for technical SEO + content engagementpSEO Page Volume CalculatorCalculate how many programmatic SEO pages your data can support

Got a specific project?

Brief us in three sentences. We'll send a tailored estimate.

Brief us on a perf audit