ROI Calculator
Calculate ROI
Measure an investment's return by comparing what you invested, including costs, with what you got back. Useful for comparing investments or projects: you need the initial investment, the final value and, if any, the costs and duration.
Calculate your investment's ROI
Result
ROI
23.81%
- Net profit
- €250.00
- Total invested
- €1,050.00
Formula version: 1.0.0
How to use the ROI calculator
- Enter the initial investment and the final value or proceeds.
- Add any additional costs, such as fees.
- Enter the duration in years if you want the annualized return.
- Review the ROI, net profit and annualized return.
ROI formula
ROI = (V − I − C) / (I + C) × 100 · Annualized = ((V / (I + C))^(1/t) − 1) × 100
What each variable means
- V
- final value
- I
- initial investment
- C
- costs
- t
- years
ROI ignores time; the annualized return lets you compare investments of different lengths.
ROI calculation example
You invest €1,000 and pay €50 in fees; at the end you get €1,300. Profit: €250. ROI = 250 / 1,050 × 100 = 23.81%.
Illustrative example with the data shown; not a guaranteed outcome.
Assumptions and limitations
- Costs are added to the initial investment.
- Taxes on the gain are not included.
Frequently asked questions
Is a higher ROI always better?
Not necessarily: consider the time involved, the risk taken and taxes.
Can ROI be negative?
Yes, when the final value is below what you invested: it indicates a loss.
Related calculators
- Annualized Return Calculator
- Investment Return Calculator
- Compound Interest Calculator
- Inflation Calculator
Related guides
Indicative result for information only; not financial or tax advice. Read the legal notice · How we calculate results
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