How to Use the Price-to-Sales Ratio Calculator
The price-to-sales ratio (PSR) divides market cap by annual revenue, showing how expensive a stock is relative to what it actually sells. Unlike the P/E ratio, which breaks down for unprofitable companies, PSR only needs revenue — making it a common alternative for growth companies still posting losses, or industries where earnings swing wildly.
As a rough rule of thumb, a PSR under 1x is sometimes read as potentially undervalued relative to sales, while above 3x is often read as potentially overvalued. But this threshold shifts a lot by industry — high-margin software and platform companies routinely trade at PSRs of 5x, 10x, or more without being unusual, while low-margin retail or manufacturing businesses can look expensive even at 1x.
Because of that, PSR is most useful when compared directly against peers in the same industry, alongside revenue growth rate and operating margin, rather than judged against one fixed number in isolation. The reference read shown here applies a general rule of thumb and should be treated as a starting point, not a final verdict.
Frequently Asked Questions
No. PSR only compares price to revenue and ignores profitability, so for unprofitable companies or low-margin industries, a low PSR alone doesn't prove undervaluation.
For growth companies that are still unprofitable or industries with volatile earnings, P/E can't be calculated meaningfully, so revenue-based PSR is often used as an alternative.
Average PSR varies widely by industry, so comparing against peers in the same sector is far more meaningful than applying one absolute threshold.