ROAS Calculator
Enter revenue and ad spend
Return on ad spend measures how much revenue each unit of advertising money produced. It is the headline metric for judging paid-campaign efficiency.
Read your ROAS
The tool divides campaign revenue by ad spend and returns your ROAS, so you can see at a glance which campaigns pay for themselves.
Other Tools
What Is a ROAS Calculator?
A ROAS Calculator measures how much campaign revenue is generated for each unit of advertising spend. ROAS, or return on ad spend, is one of the primary metrics used to evaluate the revenue efficiency of paid media campaigns.
The calculator uses campaign revenue and advertising cost to provide an immediate ROAS result. It can support performance analysis across Google Ads, Meta Ads, programmatic advertising, social media campaigns and other paid acquisition channels.
How Is ROAS Calculated?
The standard formula is:
ROAS = Campaign Revenue ÷ Advertising Spend
If a campaign generates £20,000 in revenue from £5,000 in advertising spend, its ROAS is 4. This result may also be expressed as 4x or 400%, meaning that every £1 spent on advertising generated £4 in revenue.
Enter the revenue attributed to the campaign and the corresponding ad spend. The tool divides revenue by cost and displays the result instantly. All calculations take place locally in the browser, so the figures entered are not uploaded to a server.
Revenue and cost must cover the same campaign, date range, currency and attribution scope. Combining revenue from one reporting window with spend from another can produce an inaccurate result.
What Is a Good ROAS?
There is no universal ROAS target for every business. An acceptable result depends on gross margin, operating costs, customer lifetime value, repeat-purchase behaviour and commercial objectives.
A 4x ROAS does not mean that the campaign produced four times its cost in profit. ROAS compares conversion value or revenue with advertising spend; it does not automatically deduct product costs, agency fees, payment charges or other operating expenses. Google Ads similarly calculates conversion value per cost by dividing total conversion value by advertising cost.
Businesses should establish a break-even ROAS based on their profit margins before setting campaign targets. Results can then be assessed alongside conversion volume, customer acquisition cost, average order value and profitability.
Why Track ROAS?
Monitoring ROAS helps identify which campaigns, channels, audiences and products generate the greatest revenue relative to media spend. It also provides a useful reference when allocating budgets or setting value-based bidding targets.
Google Ads describes Target ROAS as the average conversion value an advertiser wants to receive for each unit spent on advertising. Historical performance and business objectives should therefore be considered when defining a target.
The ROAS Calculator provides a fast performance baseline, but the result should be interpreted together with profit, incrementality and customer value rather than used as a standalone measure of business success.
