📈 EPS Calculator: Work Out Earnings Per Share (Basic and Diluted)
By Shihab Mia · Reviewed by ToolNimba Editorial Review, investing content · Updated 2026-07-13
This calculator gives an estimate for educational use only and is not investment advice. Reported EPS depends on accounting choices, one-off items, share buybacks and the exact weighted average used by the company, and diluted EPS can differ from the basic figure shown here. Always read the audited financial statements and speak to a qualified adviser before making any investment decision.
Enter net income, any preferred dividends, and the weighted average shares outstanding to find EPS.
Earnings per share (EPS) is a company's net profit divided by its outstanding common shares, showing how much profit belongs to each share. The basic formula is EPS = (net income minus preferred dividends) divided by weighted average shares outstanding. Enter those three numbers below and this calculator returns basic EPS instantly, along with the earnings available to common shareholders. For example, $4,800,000 in earnings for common holders spread across 2,000,000 shares gives an EPS of $2.40. EPS is one of the most watched figures in investing because it feeds directly into the price-to-earnings (P/E) ratio, which divides the share price by EPS to judge whether a stock looks cheap or expensive.
What is the EPS Calculator?
Earnings per share is the portion of a company's net profit allocated to each outstanding share of common stock. The basic formula is EPS = (net income minus preferred dividends) divided by weighted average shares outstanding. Preferred dividends are subtracted first because that money belongs to preferred shareholders, not to common holders, so it is not part of the profit the common shares can claim. If a company has no preferred stock, the numerator is simply net income. The result is usually quoted to two decimal places and in the company's reporting currency.
The denominator is the weighted average number of shares, not the share count on the last day of the year. Companies issue and buy back shares throughout a period, so a simple year-end figure would distort the result. The weighted average reflects how many shares were actually outstanding over time: if a company starts the year with 1,000,000 shares and issues 200,000 more halfway through, the weighted average is roughly 1,100,000, not 1,200,000. Share buybacks work the other way, shrinking the denominator and lifting EPS even when net income is flat.
What this formula produces is basic EPS. Companies also report diluted EPS, which assumes that stock options, warrants and convertible securities are exercised, increasing the share count and usually lowering EPS. The extra shares are estimated using the treasury stock method for options and warrants, which assumes the company uses the cash from exercised options to buy back shares at the average market price, so only the net new shares are added. Convertible bonds and convertible preferred stock are folded in with the if-converted method. Diluted EPS is the more conservative figure and the one most analysts focus on, because it shows the worst-case per-share profit if every dilutive instrument converts to common stock. The gap between basic and diluted EPS tells you how much potential dilution is sitting on the balance sheet; a wide gap is common in early-stage tech firms that pay staff heavily in options.
EPS also comes in different time flavours. Trailing EPS (often shown as TTM, or trailing twelve months) sums the last four reported quarters and is a factual, backward-looking number. Forward EPS is analysts' consensus estimate of earnings for the coming quarters or year, so it is a forecast rather than a fact. Adjusted EPS strips out one-off items such as restructuring charges, legal settlements or asset write-downs to show underlying operating performance, though because companies choose what to exclude, adjusted figures deserve extra scrutiny.
On its own EPS says little about whether a stock is cheap or expensive. A $500 share and a $5 share can report identical EPS, which is why EPS is almost always paired with the P/E ratio (price divided by EPS) to judge valuation. As a reference point, the S&P 500 traded near a trailing P/E of roughly 24 and a forward P/E close to 20 in mid-2026, so a stock's P/E is most meaningful when compared with its own history, its sector peers and the wider market rather than against a single fixed threshold. More useful than any single EPS reading is EPS growth: comparing this period's EPS with prior periods reveals whether per-share profitability is rising, flat or shrinking. Consistent EPS growth driven by real earnings, rather than by aggressive buybacks alone, is one of the clearest signs of a strengthening business.
Finally, EPS is only as reliable as the accounting behind it. Non-recurring gains can inflate net income, changes in the share count can move EPS without any change in the underlying business, and different companies define adjusted EPS differently. Under US accounting rules public companies must report both basic and diluted EPS on the face of the income statement, so both figures are available in any 10-K or 10-Q filing. Treat EPS as a starting point, read it alongside cash flow and revenue, and compare like with like, basic against basic and diluted against diluted, when weighing two companies.
When to use it
- Calculating basic EPS from a company's income statement when you only have net income and the share count.
- Feeding EPS into a price-to-earnings (P/E) ratio to gauge how a stock is valued against peers and the market.
- Comparing the profitability per share of two companies in the same industry.
- Checking a reported EPS figure, or stripping out preferred dividends to see earnings available to common holders.
- Estimating how a planned share buyback or new share issue would change EPS.
- Tracking EPS across several years to measure earnings growth and consistency.
How to use the EPS Calculator
- Enter the company's net income (profit after tax) for the period, found at the bottom of the income statement.
- Enter total preferred dividends, or leave it blank if the company has no preferred stock.
- Enter the weighted average number of common shares outstanding (companies report this figure in their filings).
- Read off the earnings per share and the earnings available to common shareholders.
- To find EPS growth, run the calculator for two periods and compare the results.
Formula & method
Worked examples
A company reports net income of $5,000,000, pays $200,000 in preferred dividends, and has 2,000,000 weighted average common shares.
- Earnings for common = 5,000,000 - 200,000 = 4,800,000
- EPS = 4,800,000 / 2,000,000
- EPS = 2.40
Result: EPS = $2.40 (earnings available to common holders = $4,800,000)
A company has net income of $1,200,000, no preferred stock, and 800,000 weighted average common shares.
- Earnings for common = 1,200,000 - 0 = 1,200,000
- EPS = 1,200,000 / 800,000
- EPS = 1.50
Result: EPS = $1.50 (no preferred dividends to subtract)
Diluted EPS: the same company (net income $1,200,000, no preferred) has 800,000 basic shares plus 100,000 shares that would be added if outstanding options were exercised.
- Diluted share count = 800,000 + 100,000 = 900,000
- Diluted EPS = 1,200,000 / 900,000
- Diluted EPS = 1.33
Result: Diluted EPS = $1.33, lower than the basic $1.50 because more shares share the profit
EPS growth: a company's EPS rises from $1.50 last year to $1.80 this year.
- Change in EPS = 1.80 - 1.50 = 0.30
- Growth = 0.30 / 1.50
- Growth = 0.20
Result: EPS growth = 20% year over year
Turning EPS into a P/E ratio: a stock trades at $36 and reports EPS of $2.40. How is it valued relative to the market?
- P/E = share price / EPS = 36 / 2.40
- P/E = 15
- Compare with the mid-2026 S&P 500 trailing P/E of about 24
Result: P/E = 15, below the broad market average, which may signal value or slower expected growth
How EPS moves with net income and share count (no preferred dividends)
| Net income | Weighted avg shares | EPS |
|---|---|---|
| $1,000,000 | 500,000 | $2.00 |
| $1,000,000 | 1,000,000 | $1.00 |
| $2,000,000 | 1,000,000 | $2.00 |
| $5,000,000 | 2,000,000 | $2.50 |
| $5,000,000 | 4,000,000 | $1.25 |
Types of EPS and what each one tells you
| EPS type | Share count / earnings used | Best for |
|---|---|---|
| Basic EPS | Weighted average common shares only | Simple per-share profit |
| Diluted EPS | Adds options, warrants, convertibles | Conservative, analyst-preferred figure |
| Trailing (TTM) EPS | Actual earnings, last four quarters | Backward-looking, factual |
| Forward EPS | Analyst estimate of future earnings | Forward valuation and forecasts |
| Adjusted EPS | Net income minus one-off items | Underlying operating performance |
Reading EPS growth rate over a year
| Prior EPS | Current EPS | EPS growth |
|---|---|---|
| $1.00 | $0.90 | -10% (declining) |
| $1.00 | $1.00 | 0% (flat) |
| $1.00 | $1.10 | +10% (modest) |
| $1.00 | $1.25 | +25% (strong) |
| $1.00 | $1.50 | +50% (very strong) |
Turning EPS into a P/E ratio (share price / EPS) and how to read it
| Share price | EPS | P/E ratio | Rough read |
|---|---|---|---|
| $30 | $3.00 | 10 | Low: cheap or slow-growth |
| $36 | $2.40 | 15 | Below broad-market average |
| $48 | $2.40 | 20 | Near the market average |
| $60 | $2.00 | 30 | High: strong growth priced in |
| $80 | $2.00 | 40 | Very high: rich expectations |
Common mistakes to avoid
- Forgetting to subtract preferred dividends. Preferred dividends belong to preferred shareholders, not common ones. If you divide raw net income by common shares without subtracting them, you overstate EPS for the common holders.
- Using year-end shares instead of the weighted average. Shares outstanding change as companies issue or buy back stock. Using the final-day count rather than the weighted average over the period distorts EPS, sometimes significantly.
- Confusing basic EPS with diluted EPS. Basic EPS ignores potential shares from options and convertibles. Diluted EPS assumes they convert, raising the share count and usually lowering EPS. Compare like with like across companies.
- Reading EPS as a measure of value on its own. A high EPS does not mean a stock is cheap, nor a low EPS expensive. EPS only becomes a value signal when set against the share price, usually through the P/E ratio.
- Taking adjusted EPS at face value. Companies decide which items to exclude from adjusted EPS, so it can flatter results. Always compare adjusted EPS with the reported (GAAP) figure to see how big the adjustments are.
- Crediting EPS growth that came only from buybacks. Repurchasing shares raises EPS by shrinking the denominator even if profit is flat. Check whether rising EPS is driven by real earnings growth or just a smaller share count.
Glossary
- Earnings per share (EPS)
- The portion of a company's net profit allocated to each outstanding share of common stock.
- Net income
- A company's total profit after all expenses, interest and taxes have been deducted from revenue.
- Preferred dividends
- Dividends paid to preferred shareholders, who rank ahead of common holders and are subtracted before calculating EPS for common shares.
- Weighted average shares
- The average number of common shares outstanding over a period, weighted by how long each amount was in issue.
- Basic EPS
- EPS calculated using only the common shares actually outstanding, before any potential dilution.
- Diluted EPS
- EPS recalculated as if all options, warrants and convertible securities were exercised, increasing the share count.
- Treasury stock method
- The technique used to estimate extra diluted shares from options and warrants, assuming exercise proceeds buy back shares at the average market price.
- Trailing EPS (TTM)
- Earnings per share summed over the trailing twelve months, or the four most recent reported quarters.
- P/E ratio
- Price-to-earnings ratio: the share price divided by EPS, used to judge how a stock is valued relative to its earnings.
Frequently asked questions
What is the formula for earnings per share?
Basic EPS = (net income - preferred dividends) / weighted average shares outstanding. You subtract preferred dividends because that profit belongs to preferred shareholders, then divide the remaining earnings by the average number of common shares that were outstanding during the period.
How do I calculate EPS with this calculator?
Enter net income, any preferred dividends, and the weighted average number of common shares. The calculator subtracts preferred dividends from net income to find earnings available to common holders, then divides by the share count to return basic EPS instantly.
Why do you subtract preferred dividends?
EPS measures the profit available to common shareholders. Preferred shareholders have a prior claim on earnings through their dividends, so that amount is removed first. What is left is the profit the common shares can actually claim, which is then spread across those shares.
What is the difference between basic and diluted EPS?
Basic EPS uses only the common shares actually outstanding. Diluted EPS assumes that stock options, warrants and convertible securities are exercised, which increases the share count and usually lowers EPS. Diluted EPS is the more conservative figure most analysts rely on.
How is diluted EPS calculated?
Diluted EPS uses the same numerator as basic EPS but a larger denominator. Extra shares from options and warrants are estimated with the treasury stock method, and convertible bonds or preferred shares are added with the if-converted method. The result is (net income - preferred dividends) divided by that fully diluted share count.
What is the difference between trailing and forward EPS?
Trailing EPS (TTM) is the actual earnings per share over the last four reported quarters, so it is a factual, backward-looking number. Forward EPS is analysts consensus estimate of earnings for the coming period, so it is a forecast that may not come true.
How do I calculate EPS growth?
EPS growth (%) = (new EPS - old EPS) / old EPS x 100. For example, if EPS rises from $1.50 to $1.80, growth is (1.80 - 1.50) / 1.50 = 20%. Comparing EPS across several years shows whether per-share profitability is rising or falling.
How does EPS relate to the P/E ratio?
The P/E ratio is the share price divided by EPS, so EPS is the denominator that turns a raw price into a valuation multiple. A stock priced at $36 with EPS of $2.40 has a P/E of 15. In mid-2026 the S&P 500 traded near a trailing P/E of about 24, which is a useful benchmark for judging whether a single stock looks cheap or expensive.
What is a good EPS?
There is no universal threshold. EPS depends on company size and share count, so a small firm and a large one can have very different EPS while being equally profitable. What matters more is whether EPS is growing over time and how it compares to the share price through the P/E ratio.
Why use the weighted average number of shares?
Companies issue and repurchase shares throughout the year. The weighted average reflects how many shares were outstanding for how long, giving a fairer denominator than the count on a single day, which could overstate or understate EPS.
Can EPS be negative?
Yes. If a company reports a net loss, or if preferred dividends exceed net income, the earnings available to common shareholders are negative and so is EPS. A negative EPS signals the business lost money for common holders over the period.
What is adjusted EPS and can I trust it?
Adjusted EPS removes one-off items such as restructuring costs or legal settlements to show underlying operating performance. Because management chooses what to exclude, it can flatter results, so always compare it with the reported (GAAP) EPS to judge how large the adjustments are.
Sources
- Earnings Per Share (EPS) , Investopedia
- Beginners' Guide to Financial Statements , U.S. Securities and Exchange Commission
- Earnings Per Share (EPS): Formula and Calculator , Wall Street Prep