maratoolHow to calculate campaign ROI and ROAS
Enter revenue and ad spend — get ROI, ROAS, and profit instantly. No spreadsheet required.
Did your last ad campaign make money or lose it? ROI (Return on Investment) and ROAS (Return on Ad Spend) answer that in seconds. The Campaign ROI Calculator takes two numbers — revenue and cost — and shows profit, ROI percentage, and ROAS ratio.
The formulas
Profit = Revenue − Cost
ROI = ((Revenue − Cost) ÷ Cost) × 100
ROAS = Revenue ÷ Cost
Example: $5,000 revenue on $1,000 spend → $4,000 profit, 400% ROI, 5× ROAS. For every dollar spent, you got five back.
ROI vs ROAS — which to use?
- ROAS — common in paid media. "We need 4× ROAS to break even." Easy to compare across campaigns.
- ROI — common in finance and email. Expressed as a percentage. 400% ROI = 4× ROAS.
They measure the same thing differently. Pick whichever your team already speaks.
What's a good ROI?
It depends on margins. E-commerce with 30% margins might need 3× ROAS to break even after COGS. SaaS with 80% margins can be profitable at 1.5×. B2B campaigns with long sales cycles often show negative short-term ROI that turns positive over quarters.
Go deeper
ROI tells you if a campaign was profitable overall. To understand unit economics — how much it costs to acquire each customer and what they're worth over time — use the CAC / LTV Calculator.