Money Tools

Graham Number Calculator

Estimate a classic Benjamin Graham style fair-value figure from earnings per share and book value per share.

Updated April 16, 2026
Free online tool
Planning and research use

Why this page exists

Old-school valuation checks are easier to compare when earnings per share and book value per share are turned into one classic heuristic instead of being weighed separately. This calculator helps visitors estimate the Graham Number from EPS and book value per share using the traditional square-root formula.

Interactive tool

Run the estimate

Enter your numbers and read the result first, then use the sections below to understand what affects the outcome.

Calculator

Graham Number calculator

Estimate a classic Benjamin Graham style fair-value figure from earnings per share and book value per share.

Result

$52.20

Estimated Graham Number based on the square root of 22.5 times earnings per share times book value per share.

Graham Number$52.20

EPS used$4.25

BVPS used$28.50

InterpretationClassic heuristic only

The square root of 22.5 times $4.25 of EPS and $28.50 of book value per share gives a Graham Number near $52.20.
This is a classic heuristic-style fair-value screen, not a full valuation model.
Use the result as a quick comparison tool only, because growth, leverage, asset quality, and business stability can all matter beyond the formula.

This is a simplified valuation heuristic, not investment advice. The Graham Number depends heavily on the EPS and book-value assumptions entered and does not replace deeper analysis.

Planning note

Last updated April 16, 2026. Use this tool to compare scenarios and plan ahead, then confirm important details with the lender, employer, insurer, contractor, or other qualified provider involved in the final decision.

How it works

What the calculator is doing

Enter earnings per share and book value per share.

The calculator multiplies 22.5 by EPS and book value per share.

It takes the square root of that product to estimate the Graham Number.

Understanding your result

This is a simplified valuation heuristic, not investment advice. The Graham Number is only as useful as the EPS and book-value assumptions behind it, and it does not replace broader analysis.

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Examples

Ways people use this tool

Example scenarios help turn a quick estimate into a more useful comparison or planning step.

Run a quick classic value screen

The Graham Number can provide a fast first-pass comparison when someone wants a simple valuation reference point.

Compare two companies on the same heuristic

Using the same formula can make it easier to compare how EPS and book value interact across two businesses.

Pair it with other per-share metrics

The result often makes more sense when viewed beside P/E, book value per share, and other per-share screens.

FAQ

Common questions

How is the Graham Number calculated here?

The calculator takes the square root of 22.5 times earnings per share times book value per share.

Why does the formula need positive inputs?

Because the traditional Graham Number formula is based on positive EPS and book value per share. If either input is zero or negative, the classic square-root result is not meaningful.

Is the Graham Number a complete valuation method?

No. It is only a simple heuristic. Growth, leverage, asset quality, and business durability can all matter far beyond the formula.

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Keep comparing

Use these related tools to compare nearby scenarios, check a second estimate, or keep narrowing down the right decision.

Money ToolsUpdated April 11, 2026