Earnings Per Share Calculator
Computes the portion of a company's net income allocated to each outstanding share of stock. Use it when valuing stocks or comparing profitability across companies on a per-share basis.
About this calculator
Earnings Per Share (EPS) is a foundational metric in equity valuation, directly feeding into the price-to-earnings (P/E) ratio. It tells you how much profit is attributable to each individual share of common stock. The formula is: EPS = Net Income / Outstanding Shares. A rising EPS over time generally signals improving profitability, while a declining EPS can be a red flag. Companies can report basic EPS (using shares currently outstanding) or diluted EPS (accounting for options, warrants, and convertible securities). Diluted EPS is the more conservative and widely used figure in analyst reports. Share buybacks reduce the share count and can increase EPS even when net income is flat, so always track both metrics together.
How to use
Suppose a company reports a net income of $12,000,000 and currently has 4,000,000 shares outstanding. Apply the formula: EPS = $12,000,000 / 4,000,000 = $3.00 per share. This means each share of stock is backed by $3.00 of profit. If the stock is trading at $45, you can then compute the P/E ratio as $45 / $3.00 = 15×. Enter your net income and share count above to calculate EPS instantly.
Frequently asked questions
What is the difference between basic EPS and diluted EPS?
Basic EPS uses only the shares currently outstanding and represents the simplest measure of per-share earnings. Diluted EPS adds all potential shares that could be created from convertible securities, stock options, and warrants to the denominator, producing a lower, more conservative figure. Regulators and analysts generally prefer diluted EPS because it reflects a worst-case dilution scenario for existing shareholders. When a company reports both figures, a large gap between them signals significant dilutive securities that current shareholders should be aware of.
How does earnings per share affect stock price valuation?
EPS is the denominator in the widely used Price-to-Earnings (P/E) ratio, calculated as stock price divided by EPS. A higher EPS, assuming a stable P/E multiple, directly supports a higher stock price. When companies beat analyst EPS estimates, stock prices typically rise; missing EPS forecasts often triggers sharp declines. Growth investors focus on the year-over-year EPS growth rate as a predictor of future price appreciation, while value investors look for low P/E ratios relative to sector peers. EPS is arguably the single most watched metric during quarterly earnings season.
Why do share buybacks increase earnings per share without increasing net income?
When a company repurchases its own shares, the total number of outstanding shares decreases. Since EPS is net income divided by share count, a smaller denominator produces a higher EPS even if net income remains exactly the same. This is why some critics argue that buyback-driven EPS growth can be misleading — it rewards shareholders on paper without reflecting genuine operational improvement. Analysts adjust for this by also tracking total net income growth and free cash flow trends. Companies with shrinking share counts but flat revenues may be masking underlying stagnation.