Isolated and conflict-resistant
Upload the exported folder to hosting you control, then paste the generated iframe. This is the broadest option for sites that allow embeds.
Legacy Tools by Local Legacy Consulting
Legacy Calculator Builder
Build the calculator your customers actually need.
Create focused calculators for costs, savings, quantities, financing, margins, and custom formulas—without asking customers to write code.
Secure checkout by Stripe · One-time purchase · Self-hosted · Single-site license · No required subscriptionBuild it on the pageEdit the widget.
Edit the widget.
See every change.
Choose the content, layout, appearance, behavior, and installation settings while the responsive preview updates beside you.
What it doesUseful on the page.
Useful on the page.
Flexible behind it.
Create focused calculators for costs, savings, quantities, financing, margins, and custom formulas—without asking customers to write code.
Main features
- ✓ Numbers, sliders, dropdowns, and choices
- ✓ Safe formula engine—no eval
- ✓ Conditional formulas
- ✓ Currency, percentages, and units
- ✓ Optional lead capture
- ✓ Responsive visual editor
Who it is for
- → Service businesses
- → Product businesses
- → Advisors and educators
Example uses
- → ROI calculator
- → Savings calculator
- → Square-footage estimator
- → Financing or margin calculator
Installation
Two dependable ways to install.
Tighter page integration
Use the generated Web Component. Shadow DOM scopes styles and a namespaced custom element avoids host-page CSS and JavaScript collisions.
Compatibility depends on what your website plan and editor permit. Wix and Squarespace may restrict custom code by plan; the included guide uses only documented HTML/embed features. Lead submissions go only to the customer-supplied endpoint.
What is included
Everything stays in the folder.
- START-HERE visual setup screen
- Production widget files
- Starter templates and examples
- Platform installation guides
- Plain-language license
- Version and configuration files
Simple commercial licensing
Single Site covers one customer-owned website. Agency licensing is available for use on multiple client sites. There is no invasive DRM and the widget does not stop working if a license server is unavailable.
Good to know.
Does it require a subscription?
No. The listed price is a one-time purchase; hosting from your chosen provider may have its own cost.
Does it send data to Local Legacy Consulting?
No. Downloaded tools contain no hidden analytics or lead relay. Forms submit only to the endpoint the owner configures.
Can I edit it without coding?
Normal content, design, logic, preview, and export tasks are handled in START-HERE. Advanced integration may still benefit from a developer.
Will it work on my site?
It works where your platform and plan allow HTML, JavaScript, an iframe, or embed code. Review your host’s current custom-code rules before purchase.
Complete toolkit
View toolkit →Get every finished tool for $450.
$1200+ combined individual value, with the same self-hosted ownership.