Price-to-Earnings (P/E) Ratio Calculator
The Price-to-Earnings (P/E) Ratio compares a company’s current share price to its Earnings Per Share (EPS). It indicates how many dollars investors are willing to pay for every dollar of current annual corporate earnings.
Sensitivity Analysis
Evaluate how variations in key operational drivers impact P/E Multiple.
| Sensitivity Case | Assumption Shift | Driver Value | P/E Multiple | Impact vs Base |
|---|
Formula & Methodology
P/E Ratio = Current Share Price / Earnings Per Share (EPS)Share PriceCurrent trading price of one common share.
EPSTrailing 12-month or forward projected net profit per share.
Practical Worked Example
Apple Inc. trades at $180.00 per share with trailing 12-month EPS of $6.00.
Interpretation & Industry Benchmarks
P/E reflects market sentiment and growth expectations. High P/E stocks must deliver strong growth to avoid multiple contraction.
Mature, slow-growth, or cyclical industries.
Balanced market valuation.
Requires consistent 15%+ annual EPS growth.
Priced for perfection; high volatility risk.
Industry Nuance: Utilities and banks trade around 10–16x P/E, while fast-growing cloud software firms often trade at 30–50x+ P/E.
Analytical Limitations
- Does not account for cash vs debt on the balance sheet; use EV/EBITDA for capital structure neutral comparison.
Frequently Asked Questions
What is a good P/E ratio for a stock?
Historically, the S&P 500 averages 16x to 20x P/E. A "good" P/E depends on earnings growth rate: a 25x P/E on a company growing at 30% is cheaper than a 15x P/E on a company growing at 0%.