The toolkit

Canvases, templates, checklists, worksheets and calculators to use today. Each one is built on a named framework, explained with its sources, and ready to fill in here, print or download. What you type stays in your browser.

18 tools

Calculators¹

The arithmetic behind a rule of thumb, with its source and its limits.

The customer lifetime value and acquisition cost calculatorEnter order value, orders a year, gross margin, expected years and acquisition cost to see a simple, undiscounted customer lifetime value, the ratio of value to cost, and the months it takes a customer to pay back what it cost to win them. After Gupta, Lehmann and Stuart's work on valuing customers.Calculator15 min

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