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The price-to-earnings (P/E) ratio is one of the most widely used valuation metrics in investing — it shows how much investors are paying for each dollar of a company's current earnings.
How it works
Enter the share price and earnings per share (EPS), and the calculator applies P/E = Share Price ÷ EPS.
- Enter share price ($).
- Enter earnings per share ($).
- Click Calculate to see your results.
Examples
A moderate valuation multiple
A $20 stock with $1.00 of EPS has a P/E ratio of 20 — investors are paying 20 times current annual earnings for one share.
Who should use it
- Comparing valuation across similar stocks.
- Investment analysis and equity research.
Industry applications
- Investment analysis and equity research
- Personal and retail investing
Advantages
- One of the most widely recognized and reported valuation metrics.
- Simple, quick calculation from two commonly available figures.
Limitations
- Meaningless or misleading for companies with negative or near-zero earnings.
Common mistakes to avoid
- Comparing P/E ratios across companies in very different industries or growth stages without adjusting for that context.
- Using a negative or near-zero EPS, which makes the P/E ratio meaningless or misleading (this calculator requires a positive EPS).
Best practices
- Compare P/E ratios against similar companies in the same industry and growth stage, not as an absolute universal benchmark.
- Consider using diluted EPS for a more conservative, complete P/E figure.
Tips
- Use the EPS Calculator or Diluted EPS Calculator first if you need to compute EPS from a company's underlying financials before finding its P/E ratio.