Price to Sales (P/S) Ratio Calculator

Revenue multiples are useful when earnings are noisy, and the Price to Sales (P/S) Ratio Calculator estimates how much equity value the market assigns to each dollar of revenue. It is a revenue multiple, not an earnings or cash-flow multiple. That distinction matters: a company can have fast-growing sales and still lose money, or it can have modest sales with very high margins. This calculator keeps the definition simple by using revenue, shares outstanding, and price per share.

This page is informational, not investment advice. P/S can help structure research, especially when earnings are negative, but it cannot determine whether a stock is attractive without margin, debt, cash-flow, and growth context.

How to use this calculator

Enter sales or revenue for the period you want to analyze. Annual revenue is the usual input, but trailing-twelve-month revenue can also work if you are consistent. Enter shares outstanding and price per share from the same general date if possible. The calculator requires positive sales, positive shares, and a nonnegative price. It returns the P/S ratio, sales per share, market capitalization, annual sales, and the share count used.

Use the P/S result beside other metrics rather than in isolation. Compare asset valuation with the price to book ratio calculator, cash generation with the free cash flow calculator, and growth-adjusted earnings valuation with the PEG ratio calculator. If your goal is business profitability rather than stock valuation, the profit calculator is a better fit.

Formula

The calculator first converts total sales into sales per share:

$\text{sales per share} = \frac{\text{sales}}{\text{shares outstanding}}$

Then it divides price by sales per share:

$\text{P/S ratio} = \frac{\text{price per share}}{\text{sales per share}}$

It also shows market capitalization:

$\text{market capitalization} = \text{price per share} \times \text{shares outstanding}$

The company-wide version is equivalent:

$\text{P/S ratio} = \frac{\text{market capitalization}}{\text{sales}}$

Worked example

Use the default inputs: $15,000,000 of sales, 1,000,000 shares outstanding, and a $30 price per share. The calculator first calculates sales per share:

$\text{sales per share} = \frac{15{,}000{,}000}{1{,}000{,}000} = 15$

Then it divides price by sales per share:

$\text{P/S ratio} = \frac{30}{15} = 2$

Market capitalization is $30 times 1,000,000 shares, or $30,000,000. The result card shows a 2.00× price to sales ratio, $15.00 of sales per share, $30,000,000 of market capitalization, and $15,000,000 of annual sales. The note says the market is valuing each $1 of annual sales at $2.00 of equity value, which is exactly the same calculation expressed in words.

Interpretation and benchmarks

A P/S ratio of 2.00× means the market capitalization is twice annual revenue. Whether that is high or low depends heavily on the business model. A software company with recurring revenue and high gross margins may trade at a higher P/S than a grocery chain because each revenue dollar can convert into more future profit. A distributor, airline, refiner, or retailer may have large revenue but thin margins, so a lower P/S can still be reasonable.

P/S is often used when earnings are temporarily negative, distorted by one-time charges, or not yet meaningful for a young company. It can also help compare companies in a sector where revenue growth is the primary early-stage metric. But the ratio should be judged against gross margin, operating margin, customer retention, capital intensity, and dilution. Revenue that requires constant discounting or heavy spending is less valuable than revenue that renews at high margins. A steady subscription dollar and a one-time low-margin resale dollar should not receive the same multiple without further analysis.

Limitations and tips

Do not compare P/S ratios across unrelated industries as if one universal target exists. Use peer groups. Make sure revenue is not double-counted or reported on a gross basis when peers report net revenue. Check whether the share count is basic or diluted, because options, convertibles, and new issuance can change the per-share view. If the company recently completed an acquisition or divestiture, trailing revenue may not match the future business.

P/S ignores debt. Two companies can have the same market capitalization and sales, but one may carry much more debt. Enterprise-value-to-sales can be more appropriate when capital structures differ, although this calculator focuses on the equity P/S ratio shown in the form. Finally, remember that revenue is not cash. Pair P/S with operating cash flow, free cash flow, and margins before drawing conclusions.

Formula sources and scope

• Principles of Financial Accounting — OpenStax, Rice University (peer-reviewed open textbook); 2019 first edition, ISBN 978-1-947172-68-5; U.S. GAAP-oriented educational definitions. Supports: salesPerShare=sales/sharesOutstanding; P/S=pricePerShare/salesPerShare. Accessed 2026-07-09.
• Principles of Finance — OpenStax, Rice University (peer-reviewed open textbook); 2022 first edition, ISBN 978-1-951693-54-1; Jurisdiction-neutral finance definitions. Supports: salesPerShare=sales/sharesOutstanding; P/S=pricePerShare/salesPerShare. Accessed 2026-07-09.

These sources support the stated formula or definition. Results remain estimates based on the entered values and do not replace financial, legal, tax, lending, or investment advice. Compare periods, units, accounting definitions, and jurisdiction-specific rules before acting.

Sources

• Corporate Finance Institute, Price to Sales Ratio — definition and formula for the P/S multiple.
• Charles Schwab, How to research stocks — overview of using valuation and fundamentals in stock research.
• Fidelity, Analyzing financial statements — financial statement context for revenue and profitability.