P/L preço-lucro
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The P/E (Price/Earnings) calculator is a tool to assess the relationship between a stock's price and its earnings per share (EPS). It divides the stock price by the EPS, generating a ratio that helps identify whether a company is overvalued or undervalued. It is commonly used to compare companies in the same industry or analyze market trends.
To calculate the P/E ratio, divide the stock price by the earnings per share (EPS), which is derived by dividing the total net income by the number of outstanding shares. For example: if a stock trades at $50 and the EPS is $5, the P/E ratio is 10. This metric is useful for investors looking to understand a company's relative value.
Use this calculator when comparing similar companies or evaluating an investment's attractiveness. However, keep in mind that the P/E ratio does not account for debt, future growth, or sector-specific risks. Combine it with other metrics for a more comprehensive analysis.
Common precautions include avoiding direct comparisons between companies in different industries and not relying solely on low or high P/E ratios. Additionally, EPS can fluctuate due to seasonal factors or extraordinary events like mergers or lawsuits, which may distort the result.
Frequently asked questions
What is the P/E ratio?
The P/E (Price/Earnings) ratio is the ratio of a stock's price to its earnings per share (EPS), indicating whether a company is expensive relative to its historical earnings.
How to use the P/E calculator?
Enter the stock price and earnings per share (EPS) into the calculator. It will compute the ratio and display the result, which can be compared to other companies or sector averages.
Does a high P/E mean a company is overvalued?
A high P/E may indicate anticipated future growth, but it can also signal overvaluation if earnings do not justify the stock price.
When is the P/E ratio most useful?
It is most useful for comparing companies in the same industry or evaluating listed stocks against benchmarks like the Ibovespa.
Why can the P/E ratio be misleading?
Because it does not account for debt, management quality, or sector-specific risks. It can also be affected by non-recurring events, such as one-time gains or losses.