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Free website ROI calculator.

Model a website investment with business evidence—not visits and hope. Compare low, expected and high cases, see the break-even point and identify which assumption needs better proof.

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YOUR ASSUMPTIONS

Model the value path—not just website traffic.

Use one consistent definition for leads, customers, gross profit and cost. The calculator applies the same math across low, expected and high cases.

Current website leads per monthCount real calls, forms, bookings or purchases using one definition.Expected website leads per monthUse an evidence-based estimate, not the number needed to make ROI positive.Lead qualification rate (%)Share of website leads that fit the business and sales criteria.Close rate on qualified leads (%)Use an observed rate when available.Gross profit per new customer ($)Use gross or contribution profit—not the full sale price.Verified operating savings per month ($)Examples: fewer intake hours, scheduling errors or manual updates.One-time website cost ($)Include strategy, content, design, build, migration and internal time.Ongoing monthly cost ($)Include care, hosting, software and planned improvements.Measurement periodCosts and benefits must use the same dates.

Nothing entered here is sent to Web Respawn or analytics. This is a planning model, not an earnings promise or financial advice.

Read the result correctly

The formula is simple. The assumptions are the real work.

A useful ROI model connects customer actions to qualified opportunities, closed customers, gross profit, operating savings and complete cost. Keep each definition visible so another person can audit the forecast.

BASELINE

Measure change, not all sales

Compare with a credible old-site or pre-launch baseline. Do not credit the new website for customers the business would probably have won anyway.

VALUE

Use profit instead of top-line revenue

A sale still has delivery costs. The model becomes more useful when customer value reflects the gross or contribution profit relevant to the decision.

RANGE

Let the weak case challenge the plan

If a reasonable low case does not recover the cost, adjust scope, extend the horizon or gather stronger evidence before treating the expected case as dependable.

Limits and next steps

Questions about this tool.

What formula does the Website ROI Calculator use?

ROI equals incremental gross profit plus verified operating savings, minus complete website cost, divided by complete website cost, multiplied by 100. Every benefit and cost uses the same measurement period.

Should I enter revenue or profit per customer?

Use the gross or contribution profit measure appropriate to the decision, not the full sale price. Ask an accountant which measure matches the business records.

Why are there low, expected and high scenarios?

A forecast is built from assumptions. The range shows whether the decision remains reasonable when the expected increase in leads is weaker or stronger than planned.

Does Web Respawn receive my financial inputs?

No. The calculator runs in your browser. Values are not sent to Web Respawn or included in analytics events.

Does a positive result guarantee the website will produce that return?

No. It is a planning model, not a performance promise. Actual results depend on demand, execution, measurement, sales follow-up and changes elsewhere in the business.

WANT A PERSON TO REVIEW THE RESULT?

Turn the finding into a clear next step.

The tool result stays free. A personal review is optional.Ask Martin to Review It