Price-to-Earnings (P/E) Calculator
Estimate P/E ratio and earnings yield from share price and EPS. Use the result as a comparison metric, not as a buy or sell signal.
Inputs
Use the current market price per share or a scenario price.
Use trailing EPS from filings or a clearly labeled forward EPS estimate.
Direct answer
P/E ratio = share price / EPS. A 120 share price and 6 EPS gives a P/E of 20.00, meaning investors pay 20 dollars for each dollar of earnings.
Results
Updates instantlyP/E ratio
20
Earnings yield
5.00%
Calculation Breakdown
Educational estimate only. P/E ignores debt, cash flow quality, margins, one-time earnings, cyclicality, dilution, and business risk. It is not investment advice.
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P/E Ratio Interpretation Guide
| Metric | Formula | Use for | Main caution |
|---|---|---|---|
| Trailing P/E | Current share price / trailing twelve-month EPS | Historical earnings multiple based on reported results | Can be distorted by one-time earnings, cyclical peaks, or recent losses |
| Forward P/E | Current share price / expected future EPS | Growth-oriented comparison using estimates | Depends on forecasts that may change or prove wrong |
| Earnings yield | EPS / share price | Inverse of P/E, useful for quick cross-asset context | Not the same as dividend yield or guaranteed return |
| Negative EPS | P/E usually shown as N/A | Flagging that earnings are negative | Use other metrics and filing review before making valuation claims |
Method and Worked Example
The calculator divides share price by EPS when EPS is positive. It also calculates earnings yield, which is EPS divided by share price. Earnings yield is the inverse of P/E and can help compare the same earnings stream in percentage terms.
Worked example: if a stock trades at $120 and has EPS of $6.00, the P/E ratio is 20.00 and earnings yield is 5.00%. That does not mean the stock is fairly valued; it only states the relationship between price and earnings under those inputs.
Investor Education Sources
FAQ
What does P/E ratio mean?
P/E ratio compares a company share price with its earnings per share. It shows how many dollars investors are paying for one dollar of earnings, but it does not prove whether a stock is cheap or expensive.
What EPS should I use for P/E?
Use trailing EPS when you want a historical multiple from reported earnings. Use forward EPS only when you understand the analyst estimate or company forecast behind it.
What if EPS is negative?
A negative EPS makes the usual P/E ratio not meaningful because the denominator is below zero. Analysts often review revenue, cash flow, balance sheet strength, and path to profitability instead.
Is a low P/E automatically a good value?
No. A low P/E can reflect slower growth, cyclical earnings, debt risk, declining margins, or market concern. Compare companies in the same industry and review filings before relying on the ratio.
Is this P/E calculator investment advice?
No. This calculator is an educational worksheet. It does not recommend buying, selling, or holding any security.
About This Calculator
Calculate price-to-earnings ratio, earnings yield, and basic valuation context from share price and earnings per share. Educational stock analysis estimate only.
Frequently Asked Questions
What does P/E ratio mean?
P/E ratio compares a company share price with its earnings per share. It shows how many dollars investors are paying for one dollar of earnings, but it does not prove whether a stock is cheap or expensive.
What EPS should I use for P/E?
Use trailing EPS when you want a historical multiple from reported earnings. Use forward EPS only when you understand the analyst estimate or company forecast behind it.
What if EPS is negative?
A negative EPS makes the usual P/E ratio not meaningful because the denominator is below zero. Analysts often review revenue, cash flow, balance sheet strength, and path to profitability instead.
Is a low P/E automatically a good value?
No. A low P/E can reflect slower growth, cyclical earnings, debt risk, declining margins, or market concern. Compare companies in the same industry and review filings before relying on the ratio.
Is this P/E calculator investment advice?
No. This calculator is an educational worksheet. It does not recommend buying, selling, or holding any security.
The SuperCalc Editorial Team maintains calculator interfaces, formula notes, examples, and supporting explanations. Methods, assumptions, source links, and review depth vary by calculator and are documented on the relevant page where available.