Think like an owner, with numbers
Calculators built around the way Buffett and Munger describe valuing a business. Every result has its own link, so you can save it or send it to someone.
Intrinsic value
Owner earnings, two growth stages, a discount rate and a terminal multiple, with a sensitivity grid.
Open calculator →Margin of safety
Price against your value estimate, and the price you would need to buy below.
Open calculator →Compounding
Savings, a steady return and the long tail where growth takes over. Shows what fees cost too.
Open calculator →Rule of 72
How fast money doubles, how many doublings fit in your time, and the cost of starting late.
Open calculator →Earnings yield vs bonds
Flip the P/E and compare it with the 10-year Treasury, using today's market numbers.
Open comparator →Moat checklist
Ten questions about pricing power, switching costs, returns and runway, scored as you go.
Score a business →Buffett indicator
US stock market value as a share of GDP since 1950, from Federal Reserve and BEA data.
See the chart →