ROI Calculator
Calculate return on investment (ROI) and annualized ROI from your initial and final amounts.
How to use this tool
- 1Enter your figures in the fields above.
- 2Results update instantly as you type.
- 3Adjust the inputs to compare different scenarios.
Frequently asked questions
What is the ROI formula?+
ROI = (final value − amount invested) ÷ amount invested × 100. Annualized ROI accounts for the holding period using compounding.
Is this calculator free?+
Yes. It's completely free, needs no sign-up, and runs entirely in your browser so your numbers stay private.
Guides & deep dives
How to Calculate ROI: Formula, Annualized ROI and Examples
Learn how to calculate ROI with the exact formula, annualized ROI, marketing ROI, real estate ROI, worked examples, and common mistakes to avoid.
15-Year vs 30-Year Mortgage: Total Cost Compared
See exactly how much more a 30-year mortgage costs versus a 15-year on a $300k loan — monthly payments, total interest, and who should choose which.
FD vs RD vs SIP: Where Should Your Savings Go?
Compare Fixed Deposits, Recurring Deposits, and SIPs on returns, risk, liquidity, and tax. Real numbers, worked examples, and a clear decision framework for Indian savers.
How Inflation Eats Your Savings (and How to Beat It)
Learn how inflation silently halves your purchasing power, why nominal returns lie, and which asset classes consistently outpace rising prices over time.