What Is a P/E Ratio and How Do I Use It in Investing?

Price and earnings growth ratio chart with magnifying glass and calculator on bright yellow background.

The price-to-earnings ratio, or P/E ratio, is just one of many tools we can use to analyze a stock. Indeed, there are as many ways to do that as there are flavors of cake.

Some may prefer a vanilla approach that keeps things simple and sweet. Others like to dive into the murky depths of a death by chocolate.