Is this calculator really free?

Yes — free, no signup, no obligation. It runs entirely in your browser.

What should I enter as conversion rate?

Use the percentage of visitors who become leads or customers. 1–3% is a common starting point for service businesses, but e-commerce varies widely.

What does payback period mean?

It is roughly how many months it takes for the value the website generates to cover your initial investment.

Is a positive ROI guaranteed?

No. The result is a model based on your assumptions. A website that isn't optimised or marketed can underperform, which is why conversion and SEO matter.

How can I improve my website's ROI?

Improve conversion (clearer calls-to-action, faster pages), increase traffic (SEO and content) and raise customer value. We can audit where your site is losing value.

Free Calculators Tool

Website ROI Calculator

A website is an investment, not just an expense. This calculator helps you estimate what yours could return by modelling the numbers you already know — how many people visit, how many convert, and what each conversion is worth to your business.

Free tool by Web Whiz Asia · No signup · Runs in your browser

What does your website generate?

Monthly visitors

Conversion rate (%)

Average value per lead ($)

Website investment ($)

Monthly running cost ($)

How It Works

How to use this tool

01
Choose whether your website generates leads or direct sales.
02
Enter your monthly visitors and your current (or target) conversion rate.
03
Enter the average value of a lead or order to your business.
04
Enter the build investment and your monthly running costs to see first-year ROI and payback.

What the result means

The result estimates the value your website could generate and how quickly it pays for itself. It is a model based on your inputs, so the accuracy depends on how realistic those numbers are.

Why it matters

ROI turns a vague “we need a website” into a business case. Understanding payback helps you decide how much to invest and which improvements will move the needle.

Who It's For

Who should use this tool

Small business owners deciding whether to invest in a website
Founders comparing a redesign vs a new build
Marketers building a case for a conversion-rate project
Service businesses that rely on inbound leads
E-commerce owners evaluating a store improvement

Example

Example: a service business that gets leads from Google

If 2,000 visitors arrive a month, 2% convert and each client is worth $1,500, the site could generate about $60,000 a year in new business. Compare that against the build cost to see the ROI and payback.

Helpful Tips

Tips to get the most from it

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Use conservative numbers — a realistic model beats an optimistic one.
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Average value per conversion should be profit or revenue, whichever you can measure consistently.
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Include hosting, maintenance and marketing in monthly costs, not just the build.
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If payback is under 12 months, the investment is usually a straightforward decision.

FAQ