Finance calculator
ROI Calculator
Calculate return on investment, net profit, total investment, and total return in seconds. Built for fast, practical decision-making.
Instant results
No login
Private by design
Calculator
Enter your numbers
Use the form on the left and read the result summary on the right.
Inputs
Adjust your costs and returns below.
Results
Moderate
ROI summary
Quick take
This investment shows a positive ROI and a healthy profit over total invested cost.
How ROI is calculated
Simple formula, useful signal
ROI compares your profit against what you invested. It helps you judge whether an investment, campaign, project, or purchase produced enough value to justify the cost.
Net Profit
Final Value + Additional Revenue − Initial Cost − Additional Costs
ROI %
(Net Profit ÷ Total Investment) × 100
Total Investment
Initial Cost + Additional Costs
When to use it
Useful for more than investing
Projects and purchases
Estimate whether a tool, machine, upgrade, or process change is worth the cost.
Campaign performance
Compare spend against measurable revenue to see whether a campaign produced meaningful return.
Side hustles and assets
Use ROI to evaluate deals, investments, and income-producing purchases before committing.
ROI FAQ
Frequently asked questions
Quick answers to common questions about this calculator and how to use it.
What is ROI?
ROI stands for return on investment. It measures how much gain or profit you receive relative to the original cost of an investment or purchase.
Why is ROI useful?
ROI helps compare opportunities, marketing spend, equipment purchases, side hustles, and other decisions where you want to measure return.
Can ROI be negative?
Yes. If the return is less than the original cost, ROI can be negative, which signals a loss rather than a gain.
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