Money Tools

Book-to-Market Ratio Calculator

Estimate book-to-market ratio from book value per share and market price per share.

Updated April 15, 2026
Free online tool
Planning and research use

Why this page exists

Valuation screens get easier to compare when book value per share and market price are turned into one book-to-market ratio instead of being looked at separately. This calculator helps visitors estimate book-to-market ratio using a simple per-share approach.

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

Book-to-market ratio calculator

Estimate book-to-market ratio from book value per share and market price per share.

Result

0.771x

Estimated book-to-market ratio based on book value per share divided by market price per share.

Book-to-market ratio0.771x

Book value per share used$18.50

Market price per share used$24.00

Implied price-to-book1.297x

$18.50 of book value per share against $24.00 of market price per share gives a book-to-market ratio near 0.771x.
That corresponds to an implied inverse price-to-book view near 1.297x.
Use the result as a simple screening ratio only, because asset quality, intangibles, and market expectations can make the same ratio mean very different things across businesses.

This is a simple valuation screen, not financial advice. Results are only as useful as the book-value basis and market-price basis you choose to compare.

Planning note

Last updated April 15, 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 book value per share and market price per share.

The calculator divides book value per share by market price per share.

It also shows the implied inverse price-to-book view for quick context.

Understanding your result

This is a simple valuation screen, not financial advice. Asset quality, accounting treatment, and whether the per-share inputs use the same basis can all affect interpretation.

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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.

Compare valuation against book value

A book-to-market ratio can make it easier to see how book value compares with market price in one quick number.

Use it as the inverse of price-to-book

Some people prefer the book-to-market view because it frames the ratio from the balance-sheet side instead of the market-price side.

Use it with other per-share tools

Book-to-market often fits naturally beside book-value-per-share, enterprise-value-per-share, and net-debt-per-share tools.

FAQ

Common questions

How is book-to-market ratio calculated here?

The calculator divides book value per share by market price per share to estimate the book-to-market ratio.

Is this the inverse of price-to-book?

Yes. Book-to-market is the inverse framing of price-to-book as long as the same book-value and market-price basis is used.

Why do the input bases matter?

The result is only useful if the book-value-per-share figure and market-price-per-share figure are on a consistent share basis and reflect comparable data.

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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 12, 2026