Run client-ready return-on-ad-spend math across channels in seconds.
Return on ad spend is the number clients ask about first, so it pays to have it right and ready. This free ROAS and blended ROAS calculator lets you enter spend and revenue for every channel you run and get a clean per-channel return plus a blended figure across the whole account. It is the fast, client-ready math you would otherwise rebuild in a spreadsheet every reporting cycle.
ROAS is revenue divided by ad spend, usually shown as a multiple. Spend 2,000 dollars and drive 8,000 dollars in revenue and your ROAS is 4x, meaning every dollar of ad spend returned four. Blended ROAS applies the same formula across every channel at once: total revenue divided by total spend. It tells you how the account is performing as a whole rather than channel by channel.
Both numbers matter because they answer different questions. Per-channel ROAS shows you where to shift budget, while blended ROAS shows the overall efficiency the client actually experiences. A channel with a lower ROAS can still be worth running if it feeds awareness that lifts the rest, which is exactly why looking at the blend alongside the parts prevents bad cut decisions.
There is no universal good ROAS because it depends entirely on margin. A business with 80 percent gross margin can thrive at a 2x ROAS, while a low-margin retailer might need 5x or more just to break even after the cost of goods. As a rough orientation, many ecommerce accounts treat 4x as strong, 2x to 4x as workable, and below 2x as needing attention, but always anchor the target to the client's actual margins.
ROAS also is not the whole story. It ignores profit margin, customer lifetime value, and the difference between new and returning customers. Use it as the headline efficiency metric, then layer in margin and lifetime value for the accounts where the simple multiple hides what is really happening.
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