ROAS Calculator
How much attributed revenue was reported per unit of ad spend? Check the formula, a worked example and the stated measurement limits.
Result for the values shown.
Calculations run in your browser.
What to enter
| Input | Meaning and units |
|---|---|
| Attributed revenue (currency) | Enter attributed revenue in currency. Use the measurement basis described below. |
| Ad spend (currency) | Enter ad spend in currency. Use the measurement basis described below. |
Understanding your result
ROAS describes attributed revenue efficiency. Evaluate contribution after fulfilment and other variable costs to judge campaign economics.
Common mistakes
- Do not interpret 500% ROAS as 500% profit.
- Do not add overlapping platform-attributed revenue without reconciliation.
Check your calculation
- Use the worked example as a known reference case, then change one input at a time and check the direction and units of the response.
Choose a consistent measurement basis
Match revenue, cost, currency and attribution window. Specify refunds, discounts, taxes, shipping and whether reported revenue is gross or net.
A second independently worked case
Zero attributed revenue gives ROAS zero for positive spend. Inputs: Attributed revenue: 0 currency; Ad spend: 100 currency. Results: Revenue-to-spend multiple: 0 ×; ROAS percentage: 0 %.
Precision and output units
Displayed results: Revenue-to-spend multiple in ×, rounded to 3 decimal places; ROAS percentage in %, rounded to 2 decimal places. Display rounding does not establish the precision of the original measurements or estimates. A small positive rate can round to 0.00%; inspect the underlying counts before treating displayed zero as an absence of events.
Calculation checks, sources and review limits
How much attributed revenue was reported per unit of ad spend?
How much attributed revenue was reported per unit of ad spend? Check the formula, a worked example and the stated measurement limits.
Common uses
- How much attributed revenue was reported per unit of ad spend
- Compare ROAS across scenarios under matching definitions.
How it works
Divide attributed revenue by positive ad spend. Multiply the multiple by 100 when expressing ROAS as a percentage: 5× equals 500%, not 5%.
Worked example
5,000 ÷ 1,000 = 5×, expressed as 500%. Enter attributed revenue 5000 currency, ad spend 1000 currency. The independently worked result is revenue-to-spend multiple 5 ×; roas percentage 500 %. Compare this example with your reporting definitions before substituting your own figures.
FAQ
Can 5× ROAS still lose money?
Yes. At a 15% pre-ad contribution margin, 5,000 revenue contributes 750 before ads. Spending 1,000 on ads then leaves negative 250 before excluded overhead. ROAS alone cannot show this cost structure.
Is 5× the same as 500% ROAS?
Yes: a revenue-to-spend ratio of 5 multiplied by 100 is 500%. This percentage is revenue relative to spend, not a profit return of 500%.