Find the accounting net worth behind each share. Enter total shareholders' equity, any preferred equity and shares outstanding for book value per share — add the price for the P/B ratio.
Answer first: book value per share is the accounting net worth of a company divided across its shares — what each share would theoretically be worth if the company sold every asset at balance-sheet value, paid off every debt and handed the rest to common shareholders. This book value per share calculator removes any preferred equity from total equity and divides by shares outstanding, then compares it to the market price.
BVPS = (Total equity − Preferred equity) ÷ Shares outstanding
Example: $2,000M of equity, no preferred stock and 100M shares gives a BVPS of $20. If the shares trade at $30, the price-to-book ratio is 30 ÷ 20 = 1.5 — the market values the company at 1.5 times its accounting net worth.
Book value is the balance sheet's answer to "what is this company worth?" — assets minus liabilities, the shareholders' equity line. Divided per share, it becomes a floor of sorts, a tangible anchor beneath the often-emotional market price. Value investors in the Benjamin Graham tradition have long compared price to book to spot stocks trading near or below their net asset value, on the theory that you are getting the business for close to the liquidation value of its assets.
A P/B below 1.0 means the market prices the company for less than its stated net worth — sometimes a genuine bargain, sometimes a warning that the assets are worth less than the books claim or that the company is bleeding cash. A P/B far above 1.0 means investors expect the company to earn much more than its assets alone suggest, usually because of brands, patents, network effects or growth that never appear on the balance sheet. Neither is automatically good or bad.
Book value is most meaningful for asset-heavy, financial businesses — banks, insurers, REITs — whose balance sheets are dominated by loans, securities and property carried at values close to reality. For these, P/B is a core valuation tool. It is far less useful for asset-light companies. A software firm or a consumer-brand giant may earn enormous profits from intangibles that accounting barely records, so their book value looks tiny and their P/B soars into double digits — not because they are overvalued, but because the balance sheet simply cannot capture what makes them valuable.
Serious analysts often strip out goodwill and other intangibles to get tangible book value, a more conservative floor. Book value is also a historical figure: assets are carried at cost less depreciation, so a company holding decades-old real estate may have a book value far below the true market value of its land. Share buybacks and losses both reduce equity and therefore BVPS. As always, treat book value as one input, best paired with earnings-based measures like the P/E ratio and the Graham number, which blends book value with earnings.
Reality check: book value reflects accounting cost, not market value, and can badly misstate the worth of intangible-rich companies. This tool is educational, not investment advice. For financial-statement basics, see the U.S. SEC at investor.gov.
Blend book value with earnings in the Graham number calculator, compare valuation with the price-to-book calculator and P/E ratio calculator, and check returns with the return on equity calculator.
Last updated July 4, 2026 · Written by Mustafa Bilgic. Educational only — not financial advice.
It is a company's common shareholders' equity divided by its shares outstanding — the accounting net worth backing each share. In theory it is what each share would receive if the company liquidated at balance-sheet values.
There is no universal figure. Below 1.0 can signal a bargain or a troubled company; asset-heavy financials often trade near 1–2, while asset-light firms with valuable intangibles trade much higher. Compare within the same industry.
Preferred shareholders have a prior claim on assets ahead of common shareholders. Removing preferred equity leaves the net worth that belongs specifically to common stock, which is what BVPS aims to measure.
Accounting records tangible assets but barely captures brands, software, patents and network effects. Asset-light companies earn profits from those intangibles, so their book value looks small and their price-to-book ratio very high.