How to calculate price-to-book value
Book value is equal to a company's current market value divided by the "book value" of all of its shares. To determine a company's book value, you'll need to look at its balance sheet. Also known as shareholder's equity or stockholder's equity, this amount is equal to the company's assets minus its liabilities.
Example
Let's calculate the P/B ratio for Company X, which has:
- Total assets of $3 billion
- Total liabilities of $2 billion
- 100 million outstanding shares
- A current share price of $15
We start by calculating Company X's book value, by subtracting $2 billion (liabilities) from $3 billion (assets) to get a book value of $1 billion. Dividing that $1 billion by the 100 million outstanding shares gives us a per-share book value of $10. Finally, we divide the current share price of $15 by that $10 to reach a price-to-book multiple of 1.5.