Export, upload, and embed
Open START-HERE in the licensed download, customize the tool, and export one HTML file with its runtime and configuration. Host that file as a page or paste the generated iframe pointing to your hosted URL.
Legacy ROI CalculatorROI
ROI
Calculator.
Calculate return on investment from visitor inputs.
One-time license · Self-hosted · Version 2.0.0
$49 one time. Download the offline editor and production files after checkout.
Secure checkout by Stripe · Single-site licenseTry the editor freeEdit the widget.
Edit the widget.
See every change.
Customize the content, design, and settings in the live preview. The free web editor downloads your configuration JSON. The licensed package includes the offline editor and production HTML, iframe, and advanced JavaScript export.
Loading the legacy roi calculator editor…
ROI calculator for small businesses
Calculate the return, then explain the assumptions.
The basic formula is (gain from the investment − cost of the investment) ÷ cost of the investment × 100. A useful result depends on a consistent time period and an honest definition of both gain and cost.
Explore website calculatorsWorked example
- Estimated gain
- $15,000
- Investment cost
- $5,000
- Net return
- $10,000
This is a planning example, not a guarantee. Compare the result with the time, risk, attribution limits, and other costs behind the estimate.
Before trusting the percentage
- Use the same time period for gains and costs.
- Include implementation, labor, platform, and ongoing costs.
- Separate projected revenue from profit.
- Document assumptions so another person can review them.
- Compare the estimate with actual results after launch.
Customize this self-hosted ROI calculator for marketing, websites, services, products, or internal planning without sending calculation data to Local Legacy Consulting.
What it doesUseful on the page.
Useful on the page.
Flexible behind it.
Main features
- ✓ Calculate return on investment from visitor inputs.
- ✓ Editable inputs: Attributable gain ($), Investment cost ($).
- ✓ Customize fonts, type sizes, colors, borders, shapes, spacing, and buttons.
Who it is for
- Professional Services
- B2B
- SaaS / Subscription
Example uses
- ROI Calculator
InstallationYour files.
Your files.
Your website.
Mount it inside your page
Upload the included widget folder and use the supplied LegacyTools.mount snippet. It creates an element with isolated styles. Your host must permit the script and setup code.
The offline editor works locally. Live endpoints, hosted videos, map providers, and device AR need the connections listed above. Website plans and content-security rules may restrict iframes or scripts; installation is not a one-click platform plugin.
What is included
Everything stays in the folder.
- Offline START-HERE visual editor
- Production runtime and HTML export
- Product-specific templates and sample assets
- Iframe and advanced JavaScript installation guides
- Plain-language license
- Version and configuration files
- Installation help and product support
Simple commercial licensing
Single Site covers one customer-owned website. Contact us about agency use on multiple client sites. There is no license-server dependency for the downloaded runtime. External services and their usage costs are separate.
Frequently asked questions.
What can I do in the free web editor?
Try the product, change its content and design, and download the configuration JSON. Production export and the offline START-HERE editor are included in the licensed package.
Does it require a subscription?
The tool license is a one-time purchase. Hosting, AI, messaging, scheduling, or other providers you connect may charge separately.
Does it send data to Local Legacy Consulting?
The downloaded runtime has no Local Legacy analytics or lead relay. Forms and connected features use only the endpoints and providers the owner configures.
Can I edit it without coding?
Content, design, preview, and export are handled in the visual editor. Connecting a backend, setting up an AI service, or adding advanced native code may require a developer.
Will it work on my site?
Your website plan must allow a hosted HTML page, an iframe, or the supplied JavaScript. Review the included installation guidance and your platform's current custom-code rules.
Complete toolkit
Explore the toolkit Get all 203 tools for $450.
$10,987 combined individual price, with the same self-hosted files.