P/E Ratio Calculator

The price-to-earnings ratio tells you how much the market is paying for each dollar a company earns, and this calculator works it out while setting your result against prevailing market benchmarks. That side-by-side view is what makes the P/E useful for judging whether a stock looks rich or cheap next to its peers and the wider market. For 2026, the S&P 500 average P/E ratio is projected to be around 23x, with the NASDAQ 100 average anticipated at roughly 30x.

Mechanically, the ratio is the current share price divided by earnings per share, drawn either from the trailing twelve months or the projected next twelve. Written out, P/E = Share Price / EPS, and it captures in one number how many dollars investors will hand over for a single dollar of earnings. The calculator applies this standard formula so the figure you get lines up with how the metric is reported everywhere else.

Context decides whether a P/E means anything. The number carries the most weight when you compare companies inside the same industry, since growth rates and accepted multiples vary widely from sector to sector. A low reading is not automatically a bargain; it can flag slow growth or trouble under the surface. By the same token, a high multiple may simply reflect strong expected growth rather than overpricing.