Price to Book Ratio Calculator
Price-to-Book Ratio Calculator
Compare a company’s market price with its common book value per share, then extend the analysis to tangible book value when intangible assets are material.
Company inputs
Use one consistent reporting scale for equity and shares. The example values are stated in millions.
Changing the scale converts current equity and share values rather than only changing their labels.
Common plus preferred equity reported on the balance sheet.
Deduct this claim to isolate book value attributable to common shareholders.
Useful for asset-heavy businesses and for testing how much book value depends on intangible assets.
Include goodwill plus identifiable intangible assets if you want a strict tangible measure.
Live results
The market price is about 1.07 times common book value per share.
Equity composition
Represented total: $261.26B
| Component | Amount | Share of represented total |
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Calculation detail
| Metric | Formula | Current value |
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What does this calculator estimate?
The price-to-book ratio compares a company’s market price per share with the accounting book value attributable to each common share. Book value is a balance-sheet measure: total stockholders’ equity less any preferred equity claim. The calculator also estimates market capitalization, the premium or discount to book value, and—when enabled—tangible book value after deducting goodwill and other intangible assets.
A ratio of 1.00× means the market price equals book value per share. A value above 1.00× means the market assigns a premium to recorded common equity; a value below 1.00× means the stock trades below that accounting amount. Neither outcome is automatically favorable or unfavorable. Asset quality, expected profitability, industry economics, capital requirements, and accounting choices all affect interpretation.
How should each input be completed?
Reporting scale
Select actual units, thousands, or millions. Equity and share counts must use the same scale. For example, entering equity in millions and shares in millions produces a correct dollar-per-share result. Switching the selector converts current values, which helps prevent accidental unit mismatches.
Total stockholders’ equity
Enter the total equity reported on the balance sheet. It normally includes common equity and preferred equity. A higher total, holding other inputs constant, increases book value per share and lowers P/B. Negative total equity can occur, but a conventional positive P/B interpretation is then not meaningful. The SEC’s guide to financial statements explains where balance-sheet equity fits within company reporting.
Preferred equity
Enter the carrying amount attributable to preferred shareholders. The calculator deducts it because common shareholders do not own that claim. Use zero when there is no preferred stock. A larger preferred balance reduces common book equity, reduces book value per share, and increases P/B for a fixed share price.
Shares outstanding
Enter the share count that matches your analytical purpose. Basic shares are simpler, while diluted shares can be more conservative when options, restricted stock, or convertible securities are material. A larger share count spreads common equity across more shares, reducing book value per share and increasing P/B. Avoid mixing an end-of-period equity balance with a share count from an unrelated date.
Share price
Use a market price aligned as closely as practical with the financial statement date. A higher price increases P/B, market capitalization, and the premium to book. The price must be nonnegative. For historical analysis, keep the price date explicit so the ratio is not mistaken for a current valuation.
Goodwill and other intangible assets
Enable tangible analysis when you want to remove assets without direct physical substance. Goodwill, acquired customer relationships, trademarks, and technology can be economically valuable, but their carrying values may not be readily realizable. Higher intangibles reduce tangible common equity and tangible book value per share, which raises P/TBV when tangible equity remains positive. The FASB Accounting Standards Codification is the authoritative U.S. source for accounting recognition and measurement rules.
How should the results be interpreted?
Price-to-book ratio
The main result shows how many dollars of market value investors assign to each dollar of common book equity. A high ratio often appears where expected returns on equity, growth, or intangible competitive advantages are strong. A low ratio can reflect cyclical pressure, weak expected profitability, asset-quality concerns, or a genuinely low market valuation. Compare the ratio with peers using similar accounting and capital structures rather than applying one universal threshold.
Book value per share and common book equity
Common book equity is the residual after preferred equity is deducted. Book value per share divides that residual by shares outstanding. Zero or negative common equity makes the standard ratio undefined or economically difficult to interpret, so the calculator displays a clear unavailable state rather than producing infinity.
Market capitalization and premium or discount
Market capitalization equals price times shares outstanding. The premium or discount equals P/B minus 1.00. Positive percentages indicate a premium to book; negative percentages indicate a discount. This percentage is not an expected return and does not measure downside protection.
Tangible book value per share and P/TBV
Tangible common equity deducts intangible assets from common book equity. P/TBV is especially sensitive when tangible equity is small. If intangible assets exceed common book equity, tangible equity becomes negative and a positive multiple is not meaningful. The result panel flags this condition instead of presenting a misleading ratio.
Equity composition chart and calculation table
The donut chart reconciles positive components to represented total equity. With tangible analysis enabled, it separates tangible common equity, intangible common equity, and preferred equity. The legend and table use the same live model values. The calculation table then shows each formula step, including normalized values, per-share results, multiples, and the market premium or discount.
What are the main benefits, limitations, and common mistakes?
P/B is easy to reproduce from public filings, ma kes capital intensity visible, and can be useful for banks, insurers, and other businesses where balance-sheet assets and liabilities are central to economics. It is less informative for companies whose value depends heavily on internally developed brands, software, networks, or human capital that accounting rules may not recognize as assets.
Common mistakes include mixing equity and share units, failing to subtract preferred equity, using stale share counts, comparing unrelated industries, and treating book value as liquidation value. Recorded assets may differ materially from current market values, while liabilities, contingencies, and off-balance-sheet exposures can alter economic risk. The FINRA overview of fundamental analysis provides broader context for combining financial statements, ratios, and qualitative factors.
Use this calculator as one accounting lens. Pair it with profitability measures such as return on equity, asset-quality analysis, cash-flow review, and a forward-looking valuation framework. The results are educational and should not be treated as personalized investment, tax, legal, or accounting advice.