In short: Earnings per share, or EPS, is the profit a company makes for each share outstanding.
It is the number you see headlined in every earnings report. Use our earnings per share calculator to check it yourself from net income and share count. Open the earnings per share calculator and follow along.
The earnings per share calculator formula
EPS = (net income minus preferred dividends) divided by weighted average shares outstanding. Diluted EPS also counts options and convertibles that could become shares later, and it is the more careful number.
A worked example
A company earns $40 million and has 20 million shares, so EPS is $2.00. Next year it earns the same $40 million but issues 5 million new shares. EPS drops to $1.60. Profit did not fall, but each share now owns less of it. That is why dilution matters.
How to read the result
Look for EPS that grows over several years, not one jump. Compare basic and diluted EPS. A big gap means many shares could be added. Also check whether growth came from real sales or from buybacks that shrink the share count.
Common mistakes to avoid
Do not ignore one time items. A land sale or lawsuit win can inflate EPS for one quarter. Look for adjusted numbers, but read what was adjusted. And remember small companies often have negative EPS, which is not a crime, just a risk to understand.
How to use the earnings per share calculator step by step
Start by opening the earnings per share calculator. Pull the numbers from the latest annual or quarterly report, which you can find free on the company site or at the SEC. Enter them, write down the result, and then run the same numbers for two or three similar companies. A single result means little. A comparison tells you a story. Keep your notes so you can see how your judgment improves over time.
Keep learning about earnings per share calculator
Then use the P/E ratio calculator to see what you are paying for that EPS. Our calculator hub has every tool in one place, and the glossary explains any term you meet along the way.
Basic EPS versus diluted EPS with real numbers
Companies report two versions of earnings per share, and the difference matters. Basic EPS uses the shares that exist today. Diluted EPS also counts shares that could be created from stock options, warrants, and convertible bonds. Say a company earns $60 million and has 30 million shares. Basic EPS is $2.00. Now suppose employees hold options that could add 3 million shares. Diluted shares are 33 million, so diluted EPS is about $1.82. The gap is 9%. A bigger gap tells you that many future shares are waiting in the wings.
Preferred dividends and why they come out
If a company has preferred stock, it owes those holders a dividend before common holders get anything. The formula subtracts that amount. For example, net income of $50 million minus $5 million in preferred dividends leaves $45 million for common holders. With 15 million weighted average shares, EPS is $3.00. If you forget the subtraction, you would get $3.33 and overstate it by 11%.
Why weighted average shares is used
Share counts change during a year. A company might start with 20 million shares and issue 4 million more at mid year. Using 24 million for the whole year would be unfair, because the new shares were only there for half of it. The weighted average here is about 22 million. This is what the EPS formula uses.
EPS and the price you pay
EPS by itself does not say whether a stock is priced high or low. For that, people compare it to the share price in the price to earnings ratio. If a stock trades at $30 and earns $2.00 per share, the P/E is 15. If another trades at $30 and earns $0.75, the P/E is 40. The second asks you to pay more for each dollar of profit. That might be fair if the company is growing faster, or it might not. The P/E ratio calculator does this step for you, and how to value a stock explains the bigger picture.
More mistakes to watch for
Do not compare EPS across companies as if it measured size. A company with 10 million shares and a company with 1 billion shares will have very different EPS numbers even with the same profit. EPS works best when you follow one company over time. Also be careful with quarterly numbers in seasonal businesses. A retailer may earn most of its profit in the holiday quarter, so compare it with the same quarter last year.
Watch out for negative EPS, too. A loss does not always mean a bad company, especially a young one, but you should know how long the company can keep losing money. Check its cash in the latest filing.
What to do next
Pick one company and find its EPS for the last five years in its annual reports at sec.gov. Write the numbers in a row. Then note the share count for the same years. Did EPS grow because profit grew, or because the share count shrank? That one question tells you a lot. For quick checks, use the free calculators page to find the right tool. This is education, not investment advice.
Questions people ask about earnings per share
Is a higher EPS always better?
Not always. A higher number is only meaningful when compared with the same company’s past results or with similar companies. EPS can also rise because the company bought back shares, not because profit grew. Looking at net income and revenue alongside it gives a fuller view.
What is the difference between basic and diluted EPS?
Basic EPS uses the shares outstanding today. Diluted EPS also counts options, warrants and convertible securities that could become shares later. Diluted EPS is usually lower, and a large gap between the two suggests many potential new shares that could spread earnings thinner later.
Why do one time items matter?
A single gain, such as selling a building, or a single loss, such as a legal settlement, can push one quarter’s EPS up or down without reflecting normal operations. Many investors read the notes to see which items are unusual and look at several years of results.
Quick recap
EPS shows profit per share, but one number rarely tells the whole story. Check the trend over several years, compare basic and diluted figures and ask whether growth comes from sales or from fewer shares. The calculators page has a P/E tool to go with it.
This is education, not investment advice. Do your own research and speak with a licensed professional before you act. Further reading: the SEC’s Investor.gov has free guides for new investors.
