There is CPA headroom. Check marginal efficiency before scaling.
CPA ↔ ROAS conversion calculator
Convert CPA into ROAS using average order value, and work backwards to the CPA required to hit a target ROAS.
No CSVNo sign-upRuns in your browser
YOUR ASSUMPTIONSChange a number. The answer updates immediately.
CALCULATED ANSWER
Current ROAS333% · 3.33×
CPA needed for target ROAS16,667
Reconcile the same performance whether your team reports it as CPA or ROAS.
FORMULA
Allocate budget with channel CPA and ROAS →ROAS = AOV ÷ CPA · required CPA = AOV ÷ target ROASHOW TO READ IT
Use the answer as a decision boundary
You need the shown CPA, a higher order value, or a revised target.
Questions before using this number
Why are ROAS and CPA convertible?
They describe the same outcome against different denominators. Once revenue per conversion is fixed, one determines the other.
Does this work for signups or installs?
Yes, if you place the expected revenue per signup in the order-value field—but be explicit about whether that expectation is validated.