Roi Calculator
Calculate the return on investment (ROI) for any project or investment. Enter initial investment, final value, and optionally additional costs to see your profit and ROI percentage.
Published by:
isCalculator Editorial Team
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How to use this tool?
This ROI (Return on Investment) calculator helps you measure the profitability of an investment. It compares your total investment (initial plus any additional costs) against the final value to calculate the percentage return.
- Enter Initial Investment ($) – The amount you originally invested (required, must be greater than zero).
- Enter Final Value ($) – The current or expected value of the investment (required, cannot be negative).
- Additional Costs ($) – Optional – Any extra expenses incurred (e.g., fees, maintenance). Leave blank if none.
- Time Period (years) – Optional – The duration of the investment. If omitted, the calculator assumes 1 year and does not annualize the ROI.
- Click Calculate ROI. The result shows:
- ROI percentage – Profit or loss relative to total investment.
- Profit – Final value minus total investment.
- Annualized ROI – Shown only if a time period other than 1 year is entered.
- A Formula Breakdown section explains the calculation step-by-step.
Note: All monetary values must be in dollars (no commas). Use decimal points for cents (e.g., 15000.50). The calculator validates inputs in real time and shows error messages if values are invalid.
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Frequently Asked Questions
ROI (Return on Investment) is a financial metric that measures the profitability of an investment. It is calculated as (Net Profit / Total Investment) × 100%.
Annualized ROI adjusts the ROI for the time period of the investment. It is calculated as (1 + ROI/100)^(1/Years) - 1, expressed as a percentage.
Yes, you can enter additional costs such as maintenance, fees, or other expenses to get a more accurate ROI.
A negative ROI indicates that the investment resulted in a loss, meaning the final value is less than the total amount invested.
