Calculators

    Practical calculators we use for clarity and decision-making. Built to be simple and usable — not theoretical.

    (Some calculators are referenced inside our courses.)

    Budgeting Calculator

    Build a clean monthly budget and cash-flow plan in minutes.

    Open

    Real Estate Investing Calculator

    Model purchase price, rents, expenses, and cash-on-cash assumptions.

    Open

    Graham–Buffett Margin of Safety Calculator

    Stress-test value vs price and build a margin of safety habit.

    Open

    VC & MedTech Upside vs Downside Calculator

    Model asymmetric outcomes and dilution-aware expectations.

    Open

    Oil Investment Calculator

    Estimate scenarios and understand the shape of outcomes.

    Open

    Need a plan, not a calculator?

    If you want a capital strategy routed to your goals and constraints, start with the intake.

    Written and reviewed by Pouyan Golshani, MD, Interventional Radiologist — Last updated April 7, 2026