Earnings per share is the single most quoted profitability metric in equity markets — it distills a company’s entire income statement into one per-share number that investors compare across companies, industries and time. When headlines say a firm “beat EPS estimates,” this is the figure they mean.
This free earning per share calculator computes both basic EPS and diluted EPS from three inputs: net income, preferred dividends and weighted-average shares outstanding. Everything runs in your browser — no signup, no data stored.
Basic & diluted EPS · per-share profitability
Basic vs. diluted EPS — what’s the difference? ⓘ
Please enter a valid net income and a share count greater than zero.
Estimates only — use weighted-average shares from the company’s filings for reported EPS. EPS feeds directly into the P/E ratio (price ÷ EPS), the most quoted valuation multiple in equity markets.
How to Use This Calculator
- Enter net income — the company’s total profit after all expenses, taxes and interest, found on the income statement.
- Enter preferred dividends — subtracted because preferred shareholders are paid before common shareholders. Enter 0 if the company has no preferred stock.
- Enter weighted-average shares outstanding — the average share count over the period, which accounts for buybacks or issuances.
- Add dilutive securities (optional) — shares from stock options, warrants or convertible bonds, to see diluted EPS.
- Click Calculate EPS for basic EPS, diluted EPS, earnings available to common shareholders and the dilution drag.
EPS formula
Diluted EPS = (Net Income − Preferred Dividends) ÷ (Shares + Dilutive Securities)
Worked example
A company reports net income of $10,000,000, pays $1,000,000 in preferred dividends and has 3,000,000 weighted-average shares outstanding, plus 500,000 dilutive option shares.
Earnings to common = $10,000,000 − $1,000,000 = $9,000,000
Basic EPS = $9,000,000 ÷ 3,000,000 = $3.00
Diluted EPS = $9,000,000 ÷ 3,500,000 = $2.57
How the Weighted Average Actually Works
Shares rarely stay constant for a whole year, so reported EPS weights each share count by the time it was outstanding. Take a company that began the year with 1,000,000 shares, then issued 400,000 more with three months left in the year:
- 1,000,000 shares outstanding for 9/12 of the year contribute 1,000,000 × 9/12 = 750,000 weighted shares.
- 1,400,000 shares outstanding for 3/12 of the year contribute 1,400,000 × 3/12 = 350,000 weighted shares.
- Weighted-average shares = 750,000 + 350,000 = 1,100,000.
With $2,200,000 of earnings available to common shareholders, basic EPS = 2,200,000 ÷ 1,100,000 = $2.00. Using the year-end 1,400,000 figure instead would have understated EPS by 21% — this is exactly why accounting standards insist on the time-weighted figure rather than a snapshot. The same logic applies in reverse when a company repurchases shares mid-year: each reduction is weighted by the fraction of the year the smaller count was in force.
The Buyback Illusion — and Other Ways EPS Moves Without Profit
EPS has a denominator problem: shrink the share count and EPS rises even if the business earns nothing more. Return to our worked example — $9,000,000 of earnings to common and 3,000,000 shares give basic EPS of $3.00. Now suppose the company spends cash on a buyback and the weighted share count falls to 2,700,000:
Basic EPS = 9,000,000 ÷ 2,700,000 = $3.33 — up 11% with identical profit. The share count is what moved, not the business. Whenever you see EPS climbing faster than net income, check the share count history before celebrating.
From EPS comes the market’s favourite price tag: the P/E ratio is simply price ÷ EPS. At a $45 share price and $3.00 of EPS, P/E = 45 ÷ 3 = 15× — investors pay $15 for each $1 of annual earnings. One technical footnote for the detail-minded: full GAAP diluted EPS also adds back the after-tax interest saved on convertible debt (because those convertibles would stop paying interest if converted). This calculator, like most quick tools, uses the simplified denominator-only version — the difference is small unless a company carries heavy convertibles, in which case its own reported diluted EPS is the authoritative figure.
Who uses EPS — and what to watch
- Investors compare EPS growth across quarters to judge whether a business is genuinely expanding or just issuing shares.
- Analysts build price targets from EPS: the P/E ratio is simply price ÷ EPS.
- Watch for buyback distortion: a company can raise EPS by repurchasing shares without earning a dollar more — always check whether share count fell.
- Negative EPS means the company lost money per share; common for early-stage firms, but persistent losses demand scrutiny.
Frequently Asked Questions
What is a good EPS?
There is no universal “good” number — a $2 EPS is excellent for a $20 stock (P/E of 10) but weak for a $200 stock (P/E of 100). Compare EPS growth rates and P/E ratios within the same industry instead of judging the raw figure.
What is the difference between basic and diluted EPS?
Basic EPS uses only shares currently outstanding. Diluted EPS adds potential shares from stock options, warrants and convertible securities, showing the worst case if everything converted. Diluted EPS is equal to or lower than basic EPS, and it is the figure analysts usually quote.
Can EPS be negative?
Yes. When net income is negative (a net loss), EPS is negative — the company lost that amount per share. Growth companies often post negative EPS for years while investing.
Where do I find net income and shares outstanding?
Net income is on the company’s income statement; shares outstanding appear under stockholders’ equity on the balance sheet and in the earnings release. Use the weighted-average figure from filings for reported EPS.
How does EPS affect the stock price?
All else equal, rising EPS supports a higher price, and the P/E ratio (price ÷ EPS) is how markets price each dollar of earnings. But price also reflects growth expectations, so a high-EPS stock can still fall if growth disappoints.
What are weighted-average shares?
Because share counts change during a period through buybacks, issuances or splits, accounting standards require averaging the shares outstanding across the reporting period rather than using a single snapshot.
What is TTM EPS, and why do analysts quote it?
TTM (trailing twelve months) EPS is the sum of the last four reported quarters’ EPS, refreshed each earnings season. It reflects the most recent full year of performance without waiting for a fiscal year to end, making it the standard denominator for current P/E ratios — though quarter-end filings in different months make cross-company TTM comparisons approximate.
Why do companies report adjusted (non-GAAP) EPS too?
Because one-off events — restructuring charges, legal settlements, asset write-downs — can make reported EPS unrepresentative of the ongoing business. Adjusted EPS strips those items out to show the core trend. It is useful, but management chooses what to exclude, so always compare adjusted EPS against the GAAP figure and read what was removed before trusting it.
Final Thoughts
Every figure on this page was computed live by the tool above — try your own numbers and see how the math responds.
Compare profitability like an analyst — run your numbers through the EPS calculator above, then explore our other free financial tools.