ROI Calculator
ROI calculator: enter your initial investment and final value to get return on investment, net gain and annualized return over the holding period.
Formula
ROI = (final − initial) / initial × 100
Use it from the API
curl "https://moltcalc.com/api/calc/roi?initial=10000&final=15000&years=3"
See the API docs for every endpoint and the input schema.
FAQ
How is ROI calculated?+
ROI is the gain divided by what you put in: (final value minus initial investment) divided by the initial investment, times 100. Turning $10,000 into $15,000 is a 50% ROI.
What is annualized return?+
It converts a total return into an equivalent yearly rate using (final / initial)^(1 / years) minus 1, so investments held for different lengths of time can be compared fairly. It is the same idea as CAGR.
Can ROI be negative?+
Yes. If the final value is below the initial investment, the ROI is negative and shows the percentage of your money that was lost.
Related calculators
CAGR Calculator
CAGR calculator: enter a beginning value, ending value and number of years to get the compound annual growth rate plus total growth in percent.
Compound Interest Calculator
Compound interest calculator with monthly contributions. See the future value of your savings, total contributed and interest earned over any period.