Formula
ROI = (ending value − initial investment − additional costs) ÷ (initial investment + additional costs) × 100.
BUSINESS
ROI Calculator
Calculate investment return, net gain and annualized ROI.
CALCULATOR GUIDE
How to use the ROI Calculator
Calculate simple return on investment, net gain and annualized ROI over a selected holding period.
Worked example
Investing $10,000 plus $500 in costs and receiving $13,000 produces a $2,500 net gain and 23.81% ROI.
Assumptions and limits
ROI does not measure risk, inflation, taxes or cash-flow timing. Annualized ROI assumes compounding and requires a positive ending-value ratio.
Frequently asked questions
What is a good ROI?
A useful benchmark depends on risk, time horizon, industry and alternatives; compare like-for-like investments.
What is annualized ROI?
Annualized ROI converts a multi-month return into an equivalent compounded yearly rate.
How this calculator works
Enter your known values and select Calculate result. Review units and inputs before relying on the planning estimate.
Actual quantities, prices and requirements can vary. Confirm critical work with a supplier or qualified professional.