Price-to-Sales Ratio Calculator

A price-to-sales (P/S) ratio calculator divides a company's market capitalisation by its annual revenue to show how much investors are paying for each pound of sales. It is particularly useful for valuing companies that are unprofitable or have highly variable earnings, where price-to-earnings ratios would be misleading or negative.

How to Use the Price-to-Sales Ratio Calculator

1. Enter the company's current share price or total market capitalisation.
2. Enter the company's annual revenue (total sales) from its most recent financial year or trailing twelve months.
3. If using per-share inputs, divide the annual revenue by shares outstanding to get revenue per share first.
4. Divide the share price by revenue per share, or divide market capitalisation by total revenue.
5. Compare the result to historical averages for the company, its direct peers, and its sector.

The Formula

P/S Ratio = Market Capitalisation / Annual Revenue

Or equivalently:

P/S Ratio = Share Price / Revenue Per Share

Revenue Per Share = Annual Revenue / Shares Outstanding

A P/S of 2 means investors are paying £2 for every £1 of annual sales the company generates. Unlike P/E, this metric remains calculable even when a company reports a loss.

Real-World Example

A fast-growing technology company has a market capitalisation of £500 million and annual revenue of £80 million. It has been loss-making for the past three years as it invests heavily in growth.

P/S Ratio = £500,000,000 / £80,000,000 = 6.25

Investors are paying 6.25 times annual sales. This would be considered high for a mature business but may be justified for a high-growth company if the market believes it can achieve significant profitability at scale. A mature retailer with thin margins and stable revenue might trade at a P/S of 0.3 to 0.8. A high-growth SaaS company might trade at 8 to 20 times sales or more during periods of strong investor sentiment.

Limitations of the Price-to-Sales Ratio

Price-to-sales does not account for profitability or margin differences between companies. A company with a P/S of 3 and a 30% net profit margin is far more attractive than one with a P/S of 3 and a 2% net profit margin. Two competitors in the same sector can therefore have similar P/S ratios while having vastly different earnings quality. The ratio also ignores debt levels. A company with the same revenue and market cap as a competitor but with far more debt is riskier. For a more complete picture, enterprise value to revenue (EV/Revenue) is preferred because it factors in both equity and debt in the numerator.

Frequently Asked Questions

What is a good P/S ratio? A good P/S ratio depends entirely on the sector, growth rate, and margin profile. Consumer staples companies typically trade at 0.5 to 2 times sales. Software companies can trade at 5 to 20 times or more. Compare within the same sector rather than using a universal benchmark.

When is P/S more useful than P/E? P/S is most useful when a company is loss-making, has cyclical or distorted earnings, or is in an early growth phase. It provides a baseline valuation anchor when earnings are not yet meaningful.

Can P/S be used to value private companies? Yes. Revenue multiples are widely used to value private companies, particularly in mergers and acquisitions and venture capital. Comparable public company P/S ratios are used as benchmarks, typically with a discount for illiquidity.

Does a low P/S always mean a stock is cheap? Not necessarily. Low P/S can indicate slow growth, thin margins, or structural challenges in the business. A company with declining revenue might trade at a very low P/S for good reason. Always pair the ratio with an assessment of revenue trends and profitability trajectory.

Why does EV/Sales differ from P/S?

Enterprise value adds net debt to market capitalisation, and sales are unaffected by how the company is funded. Two firms with the same revenue and the same equity value but different debt loads therefore share a P/S and differ on EV/Sales. Use EV/Sales whenever the capital structures differ. Plug your own figures into the calculator above.

Does a share buyback change the P/S ratio?

The aggregate ratio barely moves, because market capitalisation and revenue both stay where they were once the cash leaves the balance sheet. The per-share arithmetic does move: fewer shares means higher revenue per share against an unchanged share price, so a screen built on per-share inputs can report a different figure from one built on aggregates. Check which version you are reading.

Which revenue figure should I use for a company reporting in another currency?

Convert revenue and market capitalisation at the same exchange rate on the same date. A year-end translation for revenue against a current market capitalisation folds a currency move into what you think is a valuation comparison. State the rate and the date you used, and keep them consistent across every company in the set.

Equity value against enterprise value

P/S uses market capitalisation, which counts only the equity. A company funded partly by debt carries the same P/S as a debt-free competitor with the same revenue. Enterprise value fixes that by adding net debt to market capitalisation before dividing.

A company carrying net debt is more expensive than its P/S suggests, because anyone buying the whole business takes on the debt alongside the equity. Flip it round and net cash makes the same revenue stream cheaper on an enterprise basis than the equity multiple implies.

The bridge to P/E

P/S and P/E carry the same information once you know the net margin. Divide P/S by the net margin and you get P/E.

The last two rows are the useful pair. Two retailers with identical P/S ratios of 0.50 sit at P/E 10 and P/E 50 on a four point difference in net margin. A low P/S is not the same thing as a cheap equity stake, and the margin column is what tells the two apart.

Worked example: revenue per share

A company trades at £12.50 a share with 40 million shares in issue, so its market capitalisation is £500 million. Annual revenue is £80 million, which is £2.00 per share.

Both routes give the same answer, which is the check worth running when a screen and a calculator disagree. A mismatch means one of the two is using a different share count or a different revenue figure.

Trailing twelve months against the last financial year

A P/S built on last year's reported revenue and today's share price mixes two dates. If the company has grown or shrunk since the year end, the ratio mis-states the current position, and the error is largest just before the next set of accounts is published. Trailing twelve month revenue sums the last four reported quarters and realigns the numerator and the denominator.

The choice matters most for seasonal businesses. A single quarter annualised will overstate a retailer that earns most of its revenue in December and understate one with a summer peak. Trailing twelve months smooths the seasonality out. State which revenue figure you used, and use the same convention on both sides of any comparison.

What the ratio leaves out

P/S ignores four things that decide whether a revenue stream is worth owning.

The last row catches people out. A marketplace that reports gross transaction value as revenue looks far cheaper on P/S than the same business reporting only the commission it keeps. Both figures can be defensible under the accounting standards, and they are not comparable with each other. Check the revenue recognition note before you put two companies in the same table.

Sources

• Corporate Finance Institute, price-to-sales ratio. https://corporatefinanceinstitute.com/resources/valuation/price-to-sales-ratio/. Accessed 2026-09-13.

Also try these free tools:

• P/E Ratio Calculator
• Price-to-Book
• EV/EBITDA