Campaign ROI Calculator
Enter spend and revenue — or spend, conversions, and a revenue-per-conversion figure — to get profit, ROI%, and ROAS in one place.
Campaign return
Reading the results
Profit is simply revenue minus spend — the raw dollar outcome. ROI expresses that profit as a percentage of what was spent, which makes it easy to compare campaigns of very different sizes: a $100 campaign that nets $50 profit and a $10,000 campaign that nets $5,000 profit both show a 50% ROI. ROAS skips the subtraction and reports revenue as a straight multiple of spend, which is often the number media buyers quote directly.
If you have a conversion count, cost per conversion is reported too — useful for comparing against a target cost-per-acquisition or benchmarking one campaign's efficiency against another's.
Frequently Asked Questions
What's the difference between ROI and ROAS?
ROAS (return on ad spend) is revenue divided by spend, expressed as a multiple — a ROAS of 3 means every dollar spent returned three dollars of revenue. ROI (return on investment) is (revenue − spend) ÷ spend, expressed as a percentage — it nets out the original spend, so it reads like a profit margin. A 3x ROAS and a 200% ROI describe the exact same campaign; ROAS just doesn't subtract the 1x you spent to get there.
Is a negative ROI always bad?
For a campaign judged purely on immediate revenue, yes — it means the campaign spent more than it brought back directly. But some campaigns are run for reach, brand awareness, or list-building rather than immediate sales, where a lot of the value doesn't show up as revenue in this formula at all. Judge ROI against the actual goal of the campaign, not as a universal pass/fail line.
How do I calculate revenue if I only have conversions?
Multiply conversions by an average value per conversion — average order value for e-commerce sales, or a value you assign internally to a lead or sign-up (e.g. based on typical downstream customer value). Enter conversions and that per-conversion value and the calculator derives total revenue from them.
Does this account for costs beyond ad spend?
No — this uses campaign spend as the only cost input, matching how ROI/ROAS are conventionally reported for marketing performance. It doesn't subtract product cost of goods, agency fees, or overhead; for a full profitability picture, factor those in separately.
Educational tool only. Figures are calculated from the numbers you enter; this is not financial or investment advice, and it doesn’t account for costs outside campaign spend.