Book companion tools

Build it.
Price it.
Run it.

Practical calculators, worksheets, checklists, and book updates for readers building real service businesses from the ground up.

Field tools

Use the numbers.

Each tool explains the business concept, performs the calculation, saves working values locally, and produces a print-ready result.

Turn direct costs, labor, overhead, and a target margin into a defensible selling price.

Estimate equipment, setup costs, deposits, marketing, and working capital before launch.

Create a plain-language monthly profit and loss snapshot and inspect the key margins.

Move through the critical launch work in the right order.

The book library

Calculator and worksheet entries are stored only in your browser unless you choose to download or print them.