Question
What does ROAS mean?
ROAS stands for return on ad spend. It shows how much revenue is generated for each unit of advertising spend.
Ecommerce
Use OmniCalc's ROAS calculator to measure return on ad spend, net return, ad cost share, and profit on ad spend from campaign revenue and ad spend.
ROAS calculator
Enter attributed revenue and ad spend to estimate return on ad spend, net return, ad cost share, and profit on ad spend.
Why this result matters
A performance-marketing calculator for ecommerce operators who need a fast way to measure advertising efficiency before moving into deeper profit analysis. Use the tool above to enter a few clear inputs and get a practical answer you can use right away.
This ROAS calculator helps ecommerce sellers and marketers estimate how efficiently paid campaigns convert ad spend into revenue. It is useful because ROAS is often the first screening metric used before deciding whether a campaign should scale, pause, or be reviewed with deeper margin context.
Formula and method
ROAS is calculated by dividing attributed revenue by ad spend. Net return is revenue minus ad spend, profit on ad spend expresses net return as a percentage of ad spend, and ad cost share measures how much of revenue is consumed by ad costs.
Example
If a campaign generates $4,800 in attributed revenue from $1,200 in spend, the calculator reports a 4x ROAS, $3,600 net return, and an ad cost share of 25%.
FAQ
Short answers to the questions people often ask before or after using the tool.
Question
ROAS stands for return on ad spend. It shows how much revenue is generated for each unit of advertising spend.
Question
Not always. ROAS only compares revenue to ad spend. Product cost, shipping, fulfillment, platform fees, and other operating costs still matter.
Question
It helps show how much of campaign revenue is being consumed by advertising, which is often easier to compare across channels or periods.
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