Financial
ROI Calculator
Measure return on investment, profit, and margin.
Inputs
Adjust the assumptions to match your scenario. Results update instantly.
Results
Primary outputs and comparison insights are built from the current inputs.
Net profit
$1,750.00
Gain left after subtracting original and extra costs.
ROI
35%
Return on investment as a percentage of the original cost.
Profit margin
25%
Profit expressed as a share of the final value.
Sponsored
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How this ROI Calculator works
The ROI Calculator helps you compare projects, trades, and small business decisions by showing net profit, ROI, and profit margin from the same input set. Enter initial cost, final value, and extra costs to estimate net profit, roi, and profit margin. The calculator updates instantly and adds a comparison table plus chart so you can test the sensitivity of the result before you use it in a decision.
Quick guide
Jump to the section you need, then return to the roi calculator.
Inputs
- Total cash or capital committed at the start of the investment.
- Value of the position or project at the end of the period.
- Fees, maintenance, or other additional costs tied to the investment.
Outputs
- Gain left after subtracting original and extra costs.
- Return on investment as a percentage of the original cost.
- Profit expressed as a share of the final value.
Assumptions
- The model treats all extra costs as direct cash outflows.
- Time value of money is not included in the ROI percentage.
Tips
- Use the same time horizon when comparing different ROI scenarios.
- A high ROI may still be weak if the absolute profit is too small.
ROI Calculator formula guide
Use these roi calculator formulas to audit the output or explain it to someone else.
2 formulas
ROI Calculator examples
Review a ready-made roi calculator scenario, copy it, then tweak inputs to match your case.
Example
Small project review
Inputs
- Example input Initial cost: $8,000.00
- Example input Final value: $11,000.00
- Example input Extra costs: $500.00
Outputs
- Example result Net profit: $2,500.00
- Example result ROI: 31.25%
- Example result Profit margin: 22.73%
ROI is best used as a comparison metric alongside time, risk, and the cash needed to earn that return.
ROI by exit value
| Final value | Net profit | ROI |
|---|---|---|
| $5,250.00 | $0.00 | 0% |
| $7,000.00 | $1,750.00 | 35% |
| $8,750.00 | $3,500.00 | 70% |
| $10,500.00 | $5,250.00 | 105% |
ROI depends heavily on the exit value, so test realistic best-case and base-case outcomes instead of a single number.
ROI sensitivity
Focus point
$5,250.00
0%
Position
#1 of 4
Original order
Share of total
0%
Total: 210%
ROI depends heavily on the exit value, so test realistic best-case and base-case outcomes instead of a single number.
References
- ROI formulas used in project and investment analysis
- Basic profitability and margin calculations
Learn more
Guides connected to the roi calculator
Use these short guides when you want the decision framework behind the numbers, not just the raw output.
Category guide
Financial Calculator Guide
Understand when to use payment, return, tax, and budgeting calculators so you can make cleaner money decisions.
FAQ
ROI Calculator FAQ
What does the ROI Calculator do?
The ROI Calculator helps you compare projects, trades, and small business decisions by showing net profit, ROI, and profit margin from the same input set. Enter initial cost, final value, and extra costs to estimate net profit, roi, and profit margin. The calculator updates instantly and adds a comparison table plus chart so you can test the sensitivity of the result before you use it in a decision. It is part of our financial toolkit.
What inputs do I need?
Typical inputs include Total cash or capital committed at the start of the investment., Value of the position or project at the end of the period., Fees, maintenance, or other additional costs tied to the investment..
How are the results calculated?
We follow the formulas and assumptions outlined in the "How this calculator works" section. You will see outputs like Gain left after subtracting original and extra costs., Return on investment as a percentage of the original cost., Profit expressed as a share of the final value..
Can I share or download the results?
Use the Copy link or Print buttons to share your results. If a table or chart appears, you can download the data as CSV.
Is my data stored?
No. Calculations run in your browser and we do not store your inputs.
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