Finance

ROAS (Return on Ad Spend) Calculator

Calculate return on ad spend from revenue and ad spend.


ROAS (Return on Ad Spend) Calculator

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Find ROAS — return on ad spend — the revenue generated for every dollar spent on advertising.

How it works

ROAS is revenue divided by ad spend: ROAS = Revenue ÷ Ad Spend. $5,000 in revenue from a $1,000 ad campaign is a ROAS of 5, often written as “5:1” — five dollars earned for every dollar spent.

What this does not include

ROAS measures gross revenue against spend, not profit — it doesn’t subtract the cost of goods sold or other business expenses, which is what a related metric, return on investment (ROI), accounts for.

How to use this calculator

  1. Enter the revenue generated.
  2. Enter the total ad spend.

A worked example

$5,000 in revenue from $1,000 in ad spend: ROAS = 5,000 ÷ 1,000 = 5 — every $1 spent generated $5 in revenue.

$12,000 revenue from $3,000 ad spend: ROAS = 4.

What the variables mean

Variable Meaning
Revenue Revenue directly attributed to the ad campaign
Ad spend Total amount spent on the campaign

Edge cases worth knowing

ROAS measures revenue, not profit. A ROAS of 5 sounds strong, but if product costs and overhead eat most of that revenue, the campaign might still be barely profitable or even a loss — ROAS alone doesn’t capture margin.

Zero ad spend makes ROAS undefined — there’s no investment to measure the return against, so the calculator returns no result.

What’s considered a good ROAS?

It depends heavily on profit margins — a business with thin margins may need a ROAS of 4:1 or higher just to break even, while a high-margin business can be profitable at a much lower ratio.

How is ROAS different from ROI?

ROAS compares revenue to ad spend alone; ROI typically factors in total costs (including the cost of goods, not just advertising) to measure actual profit relative to investment.

Can ROAS be less than 1?

Yes — a ROAS below 1 means the campaign generated less revenue than it cost to run, a clear sign the campaign lost money before even accounting for other business costs.

Important: This is general information, not financial advice. Figures are estimates, and your lender or provider decides the real numbers. Check with a qualified adviser before acting on them.

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Written by

M. Whitfield

Personal finance writer

M. Whitfield writes the personal finance calculators, covering loans, mortgages, savings, tax and investment maths. The focus is on showing exactly which number goes into a formula and which assumptions a result depends on, so readers can tell when a figure applies to their situation and when it does not. Every finance page states what it does not account for as plainly as what it does.

Reviewed by

A. Whitfield-Reyes

Calculator reviewer — finance

A. Whitfield-Reyes reviews the finance calculators, checking compounding conventions, rate-period alignment, and whether each page is explicit about the costs and tax treatment it leaves out. Financial results are easy to state with false precision, so review focuses on whether the page makes its assumptions visible to a reader who is not looking for them.

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