P/E Ratio Calculator

Calculate price-to-earnings ratio and compare to market averages.
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P/E Ratio

23.1

Category

Fair Value

P/E Context

Your P/E23.1
Value Zone< 15
Market Average20 - 25
Growth Zone> 30
Earnings Yield4.33%

Use the P/E Ratio Calculator above to calculate your results. Enter your values and see instant results — all calculations run in your browser.

Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.

How It Works

Our P/E Ratio Calculator helps you determine a company's price-to-earnings ratio, a key valuation metric, and compare it against current market averages. This comparison is crucial for understanding if a stock is potentially overvalued or undervalued relative to its peers and the broader market. For 2026, the S&P 500 average P/E ratio is projected to be around 23x, while the NASDAQ 100 average is anticipated at approximately 30x.

The Price-to-Earnings (P/E) ratio is calculated by dividing a company's current share price by its Earnings Per Share (EPS) over the last twelve months (or projected next twelve months). This formula, P/E = Share Price / EPS, directly reflects how much investors are willing to pay for each dollar of a company's earnings. Our calculator uses this standard financial methodology to provide an accurate and easily understandable P/E ratio.

When using the P/E ratio, remember that it's most effective when comparing companies within the same industry, as different sectors have varying growth prospects and P/E standards. Avoid solely relying on a low P/E as a buy signal, as it might indicate underlying problems or slow growth. Conversely, a high P/E isn't always a red flag; it could signify strong growth expectations.

Example: Evaluating TechCo's Valuation

  1. 1 Imagine TechCo, a rapidly growing software company, has a current share price of $150. Their earnings per share (EPS) for the past twelve months were $4.50.
  2. 2 Using the formula, we calculate TechCo's P/E ratio: $150 (Share Price) / $4.50 (EPS) = 33.33.
  3. 3 TechCo's P/E ratio is 33.33x.
  4. 4 Comparing this to the projected 2026 NASDAQ 100 average P/E of around 30x, TechCo's P/E of 33.33x indicates it is trading at a slight premium to the broader tech market. This suggests investors are anticipating stronger future growth from TechCo compared to the average NASDAQ 100 company.

Source: SEC · Last updated: April 2026

Frequently Asked Questions

What is a good P/E ratio for a stock?
The S&P 500 historical average P/E is about 15-17. A P/E under 15 may suggest a stock is undervalued, while above 25 may indicate overvaluation or high growth expectations. Compare P/E to industry peers and the company's own historical P/E for context.
How do I calculate the P/E ratio?
Divide the current stock price by the earnings per share (EPS). For trailing P/E, use the last 12 months of actual earnings. For forward P/E, use the analyst consensus estimate for the next 12 months of expected earnings.
Why do some stocks have very high P/E ratios?
High P/E ratios indicate investors expect strong future earnings growth. Tech and growth companies often trade at 30-60x earnings. A high P/E can also mean current earnings are temporarily depressed. Compare to the PEG ratio (P/E divided by growth rate) for a more complete picture.

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