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P/E vs price to sales

Published August 17, 2026

P/E divides price by earnings. P/S divides the same price by sales per share. A $50 share on $2.50 of EPS is 20 times. On $25 of sales it is 2 times: $5,000,000,000 of market cap over $2,500,000,000 of sales.

	P/E	P/S
Formula	Price / EPS, or market cap / earnings.	Price / sales per share, or market cap / sales.
Teaching sheet	The same $50 share on $2.50 of EPS is 20 times. Earnings $250,000,000.	$50 / $25 = 2 times. Sales $2,500,000,000.
When sales thin out	P/E waits on profit. A year with sales and no earnings has no useful P/E.	Cut sales per share to $10 and P/S is 5. Sales are $1,000,000,000. The share did not get dearer.
A smaller firm	A different count still needs its own EPS before anyone writes a P/E on that smaller firm.	An $80 share on $16 of sales with 50,000,000 shares is 5 times on $4,000,000,000 of market cap and $800,000,000 of sales.
What it is not	A sales multiple. Profit is a slice of sales, not the top line.	A P/E, a cash yield, or EV/sales. Price to sales prices the equity residual.

Earnings in one denominator, sales in the other

P/S is the share price over sales per share. On a $50 share with $25 of sales per share, P/S is 2. With 100,000,000 shares, market capitalisation is $5,000,000,000 and total sales are $2,500,000,000.

How price to sales works owns the 2. How the P/E ratio works owns the 20. Same $50 price, same 100,000,000 shares: $2.50 of EPS against $25 of sales per share. A firm with no profit can still have a P/S.

How EV/sales works puts enterprise value over sales. A gap between P/S and EV/sales is net debt, not a trading signal.

A higher multiple can be thinner sales

Keep the $50 price and 100,000,000 shares. Cut sales per share to $10. P/S is 5. Market cap is still $5,000,000,000. Total sales are now $1,000,000,000. The price did not move. The denominator did.

The third sheet matches that 5 times on a smaller firm: $80 on $16 of sales per share, 50,000,000 shares, market cap $4,000,000,000, sales $800,000,000. P/S hides scale the way P/E does.

P/E against earnings yield is the profit pair. This is educational material, not financial advice.

Worked examples

A \$50 share on \$25 of sales

The share price is $50, sales per share is $25, and 100,000,000 shares are outstanding. What is P/S?

P/S: $50 / 25 = 2$ .
Market cap: $50 \times 100000000 = 5000000000$ , so $5,000,000,000.
Total sales: $25 \times 100000000 = 2500000000$ , so $2,500,000,000.
From the totals: $5000000000 / 2500000000 = 2$ . Sales per share is $25.

P/S is 2. Market cap is $5,000,000,000. Sales are $2,500,000,000. Sales per share is $25.

The same price on \$10 of sales per share

Keep the $50 price and 100,000,000 shares. Sales per share is now $10. What is P/S?

P/S: $50 / 10 = 5$ .
Market cap is still $5,000,000,000.
Total sales: $10 \times 100000000 = 1000000000$ , so $1,000,000,000.

P/S is 5. Market cap is still $5,000,000,000. Sales are $1,000,000,000. Sales per share is $10.

An \$80 share on \$16 of sales

Price is $80, sales per share is $16, shares 50,000,000. What is P/S?

P/S: $80 / 16 = 5$ .
Market cap: $80 \times 50000000 = 4000000000$ , so $4,000,000,000.
Total sales: $16 \times 50000000 = 800000000$ , so $800,000,000.

P/S is 5. Market cap is $4,000,000,000. Sales are $800,000,000. Sales per share is $16.

The same \$50 share as a P/E

Keep the $50 price and 100,000,000 shares. EPS is $2.50. What is P/E?

P/E is price over EPS: $50 / 2.50 = 20$ .
Market cap is still $5,000,000,000.
Total earnings: $2.50 \times 100000000 = 250000000$ , so $250,000,000.

P/E is 20. Market cap is $5,000,000,000. Earnings are $250,000,000. Sales on this sheet are the separate $25 per share, a 2 times P/S.

Common questions

Why use P/S when the firm has no earnings?

Because sales can still be positive when profit is not. The first sheet is $50 over $25 of sales per share, which is 2 times. That is a sales multiple, not a claim that the year was profitable.

Is this the same as P/E?

No. On the same $50 share, P/E is 20 times on $2.50 of EPS and P/S is 2 times on $25 of sales per share. Same price, different denominator.

Why is this not EV/sales?

P/S puts equity in the numerator. EV/sales puts the operations in. Debt and surplus cash sit in the gap. They are different fractions.

Keep reading

This page is educational material, not financial advice. The figures come from the formula shown and assume the inputs you enter hold for the whole term. Your own rate, fees, taxes and timing will differ, so treat the output as arithmetic to check a decision against, not as a recommendation.