Find the accounting book value of each common share from a company's balance sheet: total stockholders' equity minus preferred stock, divided by shares outstanding — plus the price-to-book ratio versus the market price.
Results
Calculated
Book Value Per Share
—
(Equity − Preferred) ÷ Shares
Common Equity
—
Total equity minus preferred stock
Price-to-Book (P/B) Ratio
—
Market price ÷ book value per share
Price vs. Book Value
—
Market premium or discount to book
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How to use this calculator
Book value per share (BVPS) measures the accounting value of a company that belongs to each common share, based entirely on the balance sheet. Enter total stockholders' equity, any preferred stock equity to exclude, and the number of common shares outstanding, then click Calculate. Add the stock's current market price (optional) to also see the price-to-book ratio. Click Clear to reset all fields.
Preferred stock is subtracted first because preferred shareholders have a priority claim on equity ahead of common shareholders — what's left after that claim is what common stock actually represents. Dividing that common equity by the share count spreads it evenly across every outstanding share.
Interpreting the results
The highlighted Book Value Per Share card is the primary output — the accounting value backing each common share. Common Equity shows the dollar amount that figure was derived from. If you supplied a market price, the Price-to-Book (P/B) Ratio and Price vs. Book Value cards compare what the market is paying to what the balance sheet says the shares are worth: a P/B above 1 means the stock trades at a premium to book value, and below 1 means a discount.
Frequently Asked Questions
What is book value per share (BVPS)?
Book value per share is the amount of a company's equity, as reported on its balance sheet, that belongs to each common share. It's calculated as (total stockholders' equity minus preferred stock equity) divided by common shares outstanding. It reflects accounting (book) value, not what the company could actually be sold for.
How is BVPS different from a stock's market price?
BVPS comes from historical balance sheet figures — what was paid for assets minus what is owed — while the market price reflects investors' expectations about future earnings, growth, and risk. The two rarely match: a growing, profitable company usually trades well above book value, while a struggling one can trade below it.
Why subtract preferred stock equity from total equity?
Preferred shareholders typically have a priority claim to a specific, stated amount of equity ahead of common shareholders, especially if the company is liquidated. Subtracting that preferred claim from total equity isolates the portion that actually belongs to common shareholders before dividing by the common share count.
What does the price-to-book (P/B) ratio tell you?
The P/B ratio divides the market price per share by book value per share. A ratio near or below 1 can indicate a stock is undervalued relative to its accounting equity (or that the market expects declining performance), while a high ratio often reflects strong expected growth, valuable intangible assets not fully captured on the balance sheet, or investor optimism.
Practical Guide for Book Value Per Share Calculator
Book Value Per Share Calculator is most useful when the inputs reflect the situation you are actually planning around, not a best-case estimate. Treat the result as a decision aid: it gives you a structured way to compare assumptions, spot outliers, and decide what to verify next. For Finance work, the most important review lens is cash flow, timing, rates, risk tolerance, and the reliability of each assumption.
Start with a baseline run using values you can defend. Then change one assumption at a time and watch which output moves the most. If one input dominates the result, spend your verification time there first. If several inputs have similar influence, use a conservative scenario and an optimistic scenario to create a practical range instead of relying on a single exact number.
Before acting on the result, compare the result with bank statements, invoices, amortization schedules, or accounting exports before making a commitment. This is especially important when the calculator supports a purchase, project plan, performance target, or operational decision. The calculator can make the math consistent, but the quality of the conclusion still depends on current data, clear units, and assumptions that match your real constraints.
When the output looks surprising, slow down and inspect each input in order. A small change in one high-leverage field can move the final number more than several low-leverage fields combined. For Book Value Per Share Calculator, that means you should first confirm the value with the greatest scale, then confirm the value with the greatest uncertainty, then rerun the calculator with conservative and optimistic assumptions. This sequence turns the calculator from a single answer into a practical decision range.
Review Checklist
Confirm every input uses the unit and time period requested by the calculator.
Run a low, expected, and high scenario so the answer has a useful range.
Check whether rounding or a missing decimal place changes the decision.
Update the calculation monthly or whenever income, rates, expenses, or balances change materially.