How This Calculator Works
ROI turns the inputs into a visible formula-based estimate. Use it to compare margin, funnel movement, CAC, revenue, cost, and scenario planning before changing pricing, spend, or operations.
Use the ROI calculator to compare business, marketing, project, or investment scenarios using initial cost, return, and extra expenses.
The calculator compares net gain with total cost so extra expenses are included in the ROI denominator.
Formula
ROI = (returned value - total cost) / total cost x 100.
Example Calculation
$14,500 returned from $10,800 total cost gives about 34.3% ROI.
When to Use This Calculator
- Compare projects
- Evaluate campaigns
- Check whether an investment clears a target return
Practical Scenarios
- Run the calculator before changing pricing, spend, hiring, or targets so margin and cash impact are visible. Use case: Compare projects.
- Compare conservative, base, and optimistic assumptions when revenue, conversion, CAC, or cost can move quickly. Start with ROI, then compare the changed result with the original.
- Use related business calculators when one metric affects the wider funnel, payback, runway, or profit picture. This is especially useful when you need to check whether an investment clears a target return.
Tips
- Include hidden costs
- Compare ROI with time horizon
- Use profit, not revenue, when evaluating business returns
Common Mistakes
- Leaving out fees or labor
- Comparing ROI across different time periods
- Using revenue as if it were profit
- Reading revenue as profit before fees, refunds, discounts, labor, taxes, and fulfillment costs are included.
- Mixing monthly, annual, cohort, and campaign numbers in the same calculation.
Assumptions and Limitations
The ROI Calculator is strongest when revenue, cost, margin, period, and funnel assumptions all use the same reporting window. Review the formula, assumptions, and related calculators before using the result in a decision.
- Refunds, chargebacks, taxes, payment fees, labor, seasonality, and contracts can change real outcomes.
- The result is a planning estimate, not accounting, tax, legal, or professional advice.
- Verify assumptions against current records before changing prices, budgets, or strategy.
ROI explains ROI, return on investment, net gain and business through decision context such as margin, period, funnel quality, and cash impact.