Revenue divided by ad spend. The number every CFO actually looks at. Includes break-even and target ROAS modes.
ROAS = revenue from ads ÷ ad spend. A 4× ROAS means $4 of attributed revenue per $1 spent. It's the most common paid-media efficiency metric — and one of the most misunderstood, because attribution loss after iOS 17/18 means platform-reported ROAS overstates by 20-40% depending on vertical.
ROAS measures channel efficiency, not business profitability. A 6× Meta ROAS sounds great until you realize Meta is cannibalizing email or organic. That's why we pair ROAS with MER (Marketing Efficiency Ratio) for every DTC client. Try the MER calculator →
A 7-day ROAS report after a creative launch will look 30% better than a 30-day report. View-through attribution inflates 1-day-view ROAS by 50-80% vs click-only. Choose your attribution window once, document it, and stop comparing apples to seasons.