Graham Number Calculator

Written by Great Medico

Updated September 25, 2026 •2 min read

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When comparing scenarios with Graham Number Calculator, consistency matters as much as the number itself. Applying the same formula to each set of displayed inputs makes the comparison easier to audit.

What this calculator does

Graham Number Calculator calculates the classic Graham Number from earnings per share and book value per share. It works from earnings per share and book value per share. For Graham Number Calculator, the calculator does not pull live quotes or analyst estimates, which keeps the scenario reproducible with the numbers you supply.

How to use it

Start with Earnings per share and Book value per share. Before calculating, recheck Earnings per share, Book value per share against the source numbers you intend to analyze.

How the calculation works

Graham Number = √(22.5 × EPS × book value per share). Graham Number Calculator substitutes the relevant form values into this equation without adding an unstated market assumption. For Graham Number Calculator, an unusual result is a reason to verify the entered values and the formula shown here before drawing a conclusion.

Example

With EPS of $4 and book value per share of $20, the Graham Number is about $42.43. Use the same Graham Number Calculator steps with your own form values rather than treating the sample as a target.

How to interpret the result

The result is a historical value-investing screening figure, not an intrinsic-value guarantee. It combines earnings and book value into one conservative-style reference point. When comparing Graham Number Calculator results, change assumptions deliberately so you can see which displayed input caused the difference.

Limitations and notes

The formula was developed for a particular value-investing framework and may be less informative for asset-light, high-growth, financial, or loss-making companies. This calculator requires non-negative EPS and book value and does not evaluate business quality or growth. The Graham Number Calculator output should be revisited when the assumptions behind its displayed inputs are no longer representative.