AI & Strategy
Updated
AI Build vs Buy Break-Even Calculator
Calculate the exact financial break-even point where in-house AI engineering beats commercial LLM API SaaS subscription costs over multi-year horizons.
Projects Hub
Interactive tools, calculators, frameworks, and models by Ross Rondeau.
Money & Decisions
Updated
Car Buy vs. Lease True Cost Calculator
Compare buying versus leasing with present-value math, opportunity cost, and actuarial depreciation across 140 vehicles to find your true crossover point.
Leadership
Updated
Linchpin Cost Calculator
Estimate what it costs to keep a linchpin in place, and what it costs when they leave and pull teammates with them, using your own salary, ramp-up, and turnover assumptions.
Tools
Updated
Meeting Cost Calculator
Empirically evaluate any meeting invite: test duration vs deliverables, check mode-to-objective alignment, quantify salary burn, and determine whether to accept, clarify, or decline.
Personal Finance
Updated
Retirement Coast & Milestone Calculator
Calculate your Coast FIRE milestone where compound investment growth fully funds your target retirement portfolio without requiring additional annual savings.
ToolsDraft
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Strategy Toolkit
Build a strategy from vision down to indicator, then check any rung in depth.
4 tools
ProductivityDraft
Updated
Calendar Architecture & Focus Block Optimizer
Map your team's meetings onto a 15-block week, see how many focus blocks they break, and walk through pruning, clustering, and timeboxing to win them back.
Productivity
Updated
Wasted Time & Inefficiency Cost Calculator
Quantify the true annual financial cost of recurring workplace interruptions, unproductive meetings, and long commutes based on your loaded hourly compensation.