Stocks & Portfolios

Graham Number

Calculate the traditional Graham-number valuation heuristic from positive EPS and book value.

Your numbers

Sample inputs are illustrative. Changing currency changes labels only.

Your result

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How to use this calculator

  1. Enter positive earnings per share, positive book value per share.
  2. Choose a display currency, then select Calculate. Results also update after a brief pause while you edit.
  3. Read the result with the assumptions below. Export details or save a second scenario to compare your choices.

Formula and method

Graham number = √(22.5 × EPS × book value per share).

Assumptions and limitations

The fixed 22.5 factor reflects a conventional heuristic; business quality, growth and accounting differences are not modeled.

Worked example

With positive earnings per share = 4, positive book value per share = 25, graham number is approximately 47.434165.

What the result means

This is a historical screening heuristic, not a universal intrinsic-value estimate or a buy signal.

Common questions

How should I interpret graham number?

This is a historical screening heuristic, not a universal intrinsic-value estimate or a buy signal.

What should I check before using this result?

The fixed 22.5 factor reflects a conventional heuristic; business quality, growth and accounting differences are not modeled.

Methodology and transparency

Calculation specification reviewed on 2026-10-14. Mathematical implementation is tested against independent reference fixtures. This does not imply review by a licensed financial professional. Read the testing and precision policy.