Graham–Buffett Margin of Safety Calculator
Apply Warren Buffett and Benjamin Graham's timeless investment principles.
The Methodology
Warren Buffett and Benjamin Graham's core principle: Only invest when you're getting more value than you're paying for.
Fair P/E ≈ 1 ÷ (2 × Risk-Free Rate)
Example: If the 10-year Treasury yield is 4%, then Fair P/E = 1 / (2 x 0.04) = 12.5
Margin of Safety: Buy only when the current price is 20-40% below intrinsic value. If something is worth $100, try to buy it at $60–$80.
Stock Analysis Inputs
Find current price on Yahoo Finance or Google Finance
Use trailing twelve months (TTM) EPS from financial reports
Recommended: 20-40% (Graham's preferred range)
Analysis Results
Current P/E Ratio:—
Fair P/E (Graham Method):—
Intrinsic Value per Share:—
Current Margin of Safety:—
Target Buy Price:—
Enter stock data to see analysis
Where to Find Your Data
Your Investment Scorecard
| Ticker | Price | EPS | P/E | Fair P/E | Intrinsic | MoS | Signal |
|---|---|---|---|---|---|---|---|
| Add stocks above to build your scorecard | |||||||