Enter return generated and total marketing cost to calculate ROI, net profit, and a clearer read on whether a campaign really paid off.
Live calculator
Result
Enter your numbers to generate a live result.
The calculator updates instantly once the input is valid, and you can copy or share the output right away.
What this calculator does
Formula / methodology
ROI = ((return generated - total marketing cost) / total marketing cost) x 100
Use the same attribution logic for both return and cost inputs.
Negative ROI is displayed clearly and not hidden behind formatting.
This tool does not model CAC payback, LTV, or accounting treatment.
Example inputs and outputs
Input: Return 10,000, cost 5,000
Output: ROI 100%, net profit 5,000
Input: Return 8,000, cost 10,000
Output: ROI -20%, net loss 2,000
Common mistakes
When to use ROI instead of ROAS
Use ROI when the decision depends on the full cost picture, not just media spend.
For fast campaign efficiency checks and channel triage.
For budget decisions that depend on net value after costs.
FAQ
Yes. If the return generated is lower than total cost, ROI is negative and the tool shows that clearly.
Use all costs when you need a business-quality answer. Use ad spend only when you want a narrower media-efficiency view.
Product CTA
See ROI broken down by campaign, creative, and audience inside the product. See how Third i connects ROI thinking to reporting and recommendations.
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