How do I use the ROI Calculator?
Enter your values in the fields and the result updates instantly as you type.
ROI Calculator
Calculate Return on Investment percentage from initial cost and final value. Enter your values, review the formula, and use the worked result as a quick check for everyday planning.
ROI Calculator
Calculate Return on Investment percentage from initial cost and final value.
Amount invested initially
Current or final value
Results
Profit/Loss
5,000 $
ROI
50 %
Return Multiplier
1.5 x
Formula: ROI = ((Final Value - Initial Cost) / Initial Cost) × 100%
ROI Calculator: Measure Your Investment Returns
Return on Investment (ROI) measures how much profit or loss an investment generated relative to its cost. This calculator gives you the raw ROI percentage, the absolute profit or loss, and the return multiplier.
Formula
The formula is ROI = ((Final Value − Initial Cost) / Initial Cost) × 100%. If your initial cost is zero, ROI is undefined. The calculator also shows the return multiplier (Final ÷ Initial).
Worked example
You invest 10,000 and later sell for 15,000. Profit = 5,000. ROI = 50%. Your return multiplier is 1.5× — for every 1 invested, you got back 1.50.
Practical guidance
ROI for different investment types
ROI works for stocks, real estate, business ventures, education costs, and even time investments. The formula is the same regardless of asset type. Just be consistent about what counts as "initial cost" — include transaction fees, taxes, and renovation costs where applicable.
Annualized ROI vs simple ROI
This calculator shows simple ROI — the total return over the entire holding period. A 50% ROI over 1 year is excellent; over 20 years it is modest. For time-adjusted comparisons, divide your ROI by the number of years held.
Frequently asked questions
What formula does this calculator use?
ROI = ((Final Value - Initial Cost) / Initial Cost) × 100%
Can I use decimal values?
Yes. Decimal inputs are supported for most calculators. Integer-based tools use rounded integer values where appropriate.
Is this calculator free?
Yes. CalcuNimble calculators are free and optimized for fast everyday use.