JobMargin Calculators — a ready-made suite of job-costing tools for contractors and trades

A small, focused web business: four standalone calculators that contractors, builders, and tradespeople use every day to price jobs and protect their margins. Each tool is a self-contained page with its own URL — shareable with a client in a quote email, embeddable in any site, and free to use.

The four tools

Job Margin Calculator — job costs + selling price → gross profit, margin %, and markup %
Markup ↔ Margin Converter — instant two-way conversion
Labor Cost Calculator — hourly rate + burden (taxes, benefits) → true cost per hour and per job
Desired Price Calculator — target margin → the exact price to quote
Why it works

Built around a real, daily pain point: most small contractors price by feel and undercharge. These tools make the math instant and visual.
Each calculator is its own landing page, so each one is independently discoverable and shareable — natural for search traffic like "job margin calculator" and "markup to margin converter."
Zero backend, zero database, works fully offline in the browser. Nothing to maintain, no infra bill.
Clean, consistent, mobile-first design that looks professional to clients and visitors alike.
What the buyer receives

The complete business as a template: team configuration, business plan, and the published site with all four working calculators
A clean, extendable codebase (React + TanStack + Tailwind) — easy to add tools, printing, or saved results
Freedom to monetize as you see fit: free tools build the audience; natural next steps are a pro tier, sponsored ads, or premium calculators
Honest snapshot This is a freshly built product (MVP complete, published, and verified) — not an established revenue stream. Its value is the working, launch-ready product and a focused niche: a credible toolkit you can launch, extend, and market.