What this calculator does
Graham number works out benjamin Graham’s quick estimate of a fair share price from earnings and book value. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaGraham number = √(22.5 × EPS × Book value per share)
The inputs explained
| Field | What to enter |
|---|---|
| Earnings per share ($) | A number, measured in your currency. Starts at 3.5. |
| Book value per share ($) | A number, measured in your currency. Starts at 28. |
| Current share price ($) | A number, measured in your currency. Starts at 65. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with earnings per share
Every other input is held at the calculator’s starting values while earnings per share varies. Select any row to load that scenario into the calculator.
How the answer changes with earnings per share