Website ROI Calculator

How the website ROI calculator works

The calculator takes two sides of an investment and compares them. On one side is what the site earns, which it builds from your traffic, your conversion rate and the gross profit each conversion produces.

On the other side is what the site costs, both the one-time build and the running monthly spend.

You pick a time period of 12, 24 or 36 months. The tool projects both sides across that period, subtracts cost from return, and expresses the result as a percentage.

It also reports whether and when the upfront cost is recovered and how much traffic is needed to break even when those figures can be calculated.

The calculation runs in your browser and does not require an email address or other contact information.

If you request a quote, the contact details and calculator inputs you submit are sent to Web Hosting Services and handled according to our Privacy Policy.

The formula behind your ROI

ROI is commonly calculated as gain minus cost, divided by cost, shown as a percentage. This calculator applies that standard equation by defining gain as website-attributable gross profit and cost as the website investment entered for the same period.

The calculator builds each side in a fixed sequence.

Gain is gross profit over the period.

The tool multiplies monthly visitors by your conversion rate to get conversions, multiplies that by revenue per conversion to get revenue, then applies your gross margin so the figure reflects profit rather than top-line sales.

That monthly gross profit is multiplied by the number of months.

Cost is total investment over the same period. The tool takes your one-time build cost and adds your recurring monthly cost (plus optional marketing spend) multiplied by the months in the period. Gain minus cost gives net gain in dollars.

Divided by cost, it gives the ROI percentage that headlines your result.

What each input means

Monthly visitors is the traffic your website receives, not your whole audience across every channel. Conversion rate is the share of those visitors who take the action that matters, entered as a percentage between 0 and 100.

Together they produce the number of conversions the model works from each month.

Revenue per conversion changes meaning with the toggle. In sale mode it is average revenue per sale.

In lead mode it is expected revenue per lead, which is your average deal value multiplied by your lead-to-customer close rate, entered as one figure.

Gross margin then converts revenue into gross profit, so enter it as a percentage, not a dollar profit figure.

Costs split into two fields. Upfront build cost is the one-time spend to design and launch the site. Recurring cost is the monthly total for hosting, domain and maintenance.

Convert annual expenses, such as domain renewal fees, into a monthly equivalent before entering them.

For typical figures to enter, our research covers the cost to build a website, ongoing web hosting cost and annual domain name cost in detail.

Marketing spend is optional and applies only when you pay to drive the traffic you entered. Leave it blank and the tool treats it as zero, so you never double-count spend already inside your recurring cost.

How to read your results

The headline is your ROI percentage over the chosen period. A positive number means the site returned more gross profit than it cost. A negative number means gross profit did not cover total website costs during the selected period.

That may be because the upfront build has not yet been recovered or because monthly costs exceed monthly gross profit.

Net gain shows the same result in dollars, which is often easier to act on than a percentage. Payback tells you how many months the site takes to earn back its upfront cost from monthly contribution.

When there is no upfront cost, the tool says so plainly rather than implying a cost that does not exist, and it describes whether monthly operations run at a gain, a loss or break-even.

Break-even reports the traffic the site needs to cover its cost, shown as both conversions per month and visitors per month.

The gross-profit return multiple shows how much gross profit the website is estimated to generate for each dollar of total website cost.

If you enter no cost at all, ROI is undefined because there is no cost to divide by. The tool notes that there is no upfront cost to recover and suppresses the break-even calculation.

A worked calculation you can follow

The calculator shows its own worked example inside the expandable breakdown, and it is built entirely from the figures you enter, not from sample numbers. Open the breakdown after you calculate to see each step applied to your own inputs.

The steps follow the formula in order. Monthly visitors times your conversion rate gives conversions. Conversions times revenue per conversion gives revenue.

Revenue times gross margin gives monthly gross profit, which is then multiplied by the months in your period to reach total return.

On the cost side, the upfront build is added to your recurring and optional marketing spend across the same months.

Total return minus total cost gives net gain, and net gain divided by cost gives the ROI percentage, so every figure traces back to a number you entered.

Where this calculator fits with your hosting math

Your ROI is only as accurate as the recurring cost you enter. Hosting is one component of the recurring-cost line, alongside domain fees, maintenance and any attributable marketing spend.

The following calculators help you pin down those figures before you model the return, and each one covers a different hosting decision that can move your monthly cost up or down.

For general hosting spend across plan types, start with our web hosting cost calculator. To size a growing site onto a virtual private server, use the VPS cost calculator.

For cloud-based hosting spend, the cloud hosting cost calculator covers the same ground for cloud plans.

When the decision is about owning versus renting infrastructure, our total cost of ownership calculator weighs cloud against colocation and on-prem. To price a rack directly, the colocation cost calculator breaks down the monthly line item by item.

To choose a hosting tier in the first place, our shared vs VPS vs dedicated comparison lays out the trade-offs.

If you resell hosting, the reseller hosting profit calculator models your margins, and you can browse every tool from all our hosting calculators.

For deeper background on the same decisions, see our shared vs VPS vs dedicated hosting guide, our walkthrough on how to choose a web hosting plan and our web hosting reseller pricing research.

Frequently asked questions

What conversion rate should I enter?

Enter your own measured rate whenever you have one, because it beats any average.

If you need a reference point, an overall average conversion rate of 5.13% comes from more than 110 million sessions and over 5 million conversions across 13 industries.

Results vary substantially by industry. Legal and automotive are at 7.9% and software at 7.6%. At the lower end, travel is at 1.9%, retail and ecommerce at 2.4% and health and social care at 2.3%.

A conversion is defined as a qualified lead or sale and includes both online and offline conversions. This overall figure should not be treated as a universal ecommerce purchase rate or used as a default calculator input.

What counts as a conversion, a sale or a lead?

Both work, and the toggle handles the difference. In sale mode you enter average revenue per sale. In lead mode you enter expected revenue per lead, which already accounts for the fact that not every lead closes.

A conversion is a qualified lead or sale that includes online and offline conversions such as forms and phone calls, a useful reminder that the right definition depends on how your business actually books revenue.

What should I use for gross margin?

Use your real gross margin, meaning the share of revenue left after the direct cost of delivering the product or service.

This is the field that keeps the model honest, because it converts revenue into profit before anything is compared to cost.

Enter gross margin as a percentage, not a dollar profit figure. Using a 100% margin treats all revenue as gross profit and will usually overstate return unless the business genuinely has no direct fulfillment costs.

How much does a website cost to build and run?

Costs vary widely by approach. For an informational, non-ecommerce small-business website, a DIY build runs $0 to $450 and professional design begins around $1,500.

Hosting and apps run $15 to $150 per month and basic maintenance outside those ongoing fees runs $20 to $100 per year.

Domain registration typically adds $10 to $35 per year. Use the figures that match your own quotes, and lean on the related hosting calculators above for the recurring line.

Why is my ROI negative or my payback so long?

A negative ROI means gross profit did not cover total website costs during the selected period.

A longer horizon can make the ROI percentage less negative because the one-time build cost stays fixed, but it does not fix a monthly operating loss.

If monthly costs exceed monthly gross profit, the dollar loss grows each month and payback is not reached.

Is the result a guarantee of returns?

No. Every figure is an estimate produced from the inputs you enter, and it assumes your traffic, conversion rate, revenue, margin and costs stay constant across the period. It excludes taxes, financing and any expense you did not enter.

Treat it as a planning model for comparing scenarios, not a promise of revenue or profit.

Sources and additional resources

• Ruler Analytics. “Conversion Rate Benchmarks 2026: Based on 5+ Million Conversions Tracked Across 13 Industries.” Ruler Analytics.
• Forbes Advisor. “How Much Does A Website Cost? (2026 Guide).” Forbes Advisor.
• Forbes Advisor. “Website Hosting Cost Guide 2026.” Forbes Advisor.