Marketing Metrics
ROAS vs ROI: Which Metric Should You Use?
ROAS measures revenue from ad spend. ROI measures profit from invested cost. Marketers often need both to avoid revenue-only decisions.
By QuickWebUtility Editorial ยท Published Aug 6, 2026
The quick answer
Use ROAS when you need to know how much revenue advertising generated per dollar of ad spend. Use ROI when you need to know whether the campaign or investment made profit after costs.
ROAS formula
roas = attributed_revenue / advertising_spendIf ads spend 2,000 and attributed revenue is 10,000, ROAS is 5.0x. The ROAS Calculator also shows revenue per ad dollar and contribution after advertising.
ROI formula
roi = net_gain / total_investment * 100ROI subtracts costs before calculating return. Use the ROI Calculator when product cost, campaign cost, implementation cost, or other expenses matter.
Example
A campaign spends 2,000 and generates 10,000 in revenue. ROAS is 5x. If cost of goods sold is 4,000 and additional campaign costs are 500, contribution after ads is 3,500.
Common mistakes
Do not treat high ROAS as proof of profit when margins are thin. Do not compare ROAS across channels with different attribution windows. Do not use ROI without documenting which costs are included.
Actionable recommendations
Report ROAS, contribution, CAC, and ROI together for major campaigns. Use the Conversion Rate Calculator and CAC Calculator. See also ROI Explained.
FAQ
Can ROAS be high while ROI is low?
Yes. High revenue from ads can still produce weak profit if product costs, discounts, fulfillment, or other campaign costs are high.
Which metric should executives see?
Usually ROI, contribution, CAC, and payback period. ROAS is useful context, but it is not the whole profitability story.