Price to Earnings (P/E) Calculator
Find the P/E ratio.
P/E shows how much investors pay per dollar of earnings.
How the Math Works
The Price to Earnings (P/E) ratio is calculated by dividing a company's current stock price by its earnings per share (EPS). EPS itself is derived from the company's net income divided by the number of outstanding shares. This creates a straightforward mathematical relationship: P/E = price ÷ EPS. The calculation yields a single number that represents how much investors are willing to pay for each dollar of earnings, providing a quick quantitative measure of a company's market valuation relative to its profitability.
Practical Applications
To use the P/E calculator, simply input the current stock price and the company's earnings per share. For example, if a stock is trading at $50 per share with an EPS of $2.50, the P/E ratio would be 20. This means investors are paying $20 for every $1 of annual earnings. Financial analysts use this ratio to compare companies within the same industry, where a higher P/E might indicate growth expectations while a lower P/E could suggest undervaluation or financial difficulties.
Day-to-Day Use
The P/E ratio helps investors make informed decisions about buying, holding, or selling stocks in their investment portfolios. By comparing a company's P/E ratio to industry averages or historical ranges, you can gauge whether a stock might be overpriced or underpriced. This metric is particularly useful when researching potential investments, as it provides a quick snapshot of how the market values the company's earnings, helping you assess risk and potential returns in your everyday investment decisions.
Worked example
$40 ÷ $2 → P/E 20.
FAQ
High P/E?
Implies high growth expectations (or overvaluation).