Business Tool
ROI Calculator
Calculate return on investment as a percentage so you can compare campaigns, projects, and spending decisions faster.
Use this ROI calculator when you want a simple answer to a common question: did the return justify the cost? It is useful for marketing spend, tools, projects, inventory bets, and quick planning conversations.
Runs in the browser
No signup needed
Instant output
Tool Area
Everything runs in the browser.
How to use
- Enter the gain generated and the original cost.
- Calculate the ROI percentage instantly.
- Compare different investments using the same logic.
Common use cases
- Review marketing campaign performance.
- Evaluate software or tooling spend.
- Compare the return of different growth initiatives.
FAQ
What is the formula for ROI?
ROI is calculated as (gain minus cost) divided by cost, then multiplied by 100.
Can ROI be negative?
Yes. If the return is lower than the cost, ROI becomes negative.