Compare the efficiency of each channel in a media mix and find where the next unit of budget belongs.
Blended ROAS conceals the spread between channels, which is exactly what a reallocation decision needs. Comparing per-channel ROAS shows where marginal budget earns most, subject to each channel eventually saturating. Optimising to a blended target lets a weak channel hide behind a strong one and quietly consume budget that would earn more elsewhere.
Media Mix
Channel ROAS = channel revenue ÷ channel spend; blended ROAS = total revenue ÷ total spend
Channel ROAS = channel revenue ÷ channel spend; blended ROAS = total revenue ÷ total spend Blended ROAS conceals the spread between channels, which is exactly what a reallocation decision needs. Comparing per-channel ROAS shows where marginal budget earns most, subject to each channel eventually saturating.
Optimising to a blended target lets a weak channel hide behind a strong one and quietly consume budget that would earn more elsewhere.
This calculator takes 6 inputs: Paid search spend, Paid search revenue, Paid social spend, Paid social revenue, Display and video spend, Display and video revenue. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.