100% Free
No hidden charges
Instant Results
No waiting
No Sign-up
Use immediately
Unlimited Use
No daily limits
What is ROI Calculator?
Calculate Return on Investment (ROI) for any project, purchase, or financial decision. Our ROI Calculator shows you the percentage return, absolute gain or loss, and annualized return — giving you a clear picture of whether an investment is worth it.
Key Features
How to Use ROI Calculator
Enter your initial investment amount
Enter the final value or return amount
Optionally enter the time period for annualized ROI
Click Submit to see ROI percentage, net gain, and annualized return
Common Use Cases
Tips & Best Practices
Always compare ROI against opportunity cost — could the money earn more elsewhere?
Use annualized ROI to compare investments with different time horizons fairly
Include all costs (fees, taxes, maintenance) in your initial investment for accurate ROI
Frequently Asked Questions
What is a good ROI?
It depends on the investment type and timeframe. Stock market average is ~10%/year. Real estate varies by market. Any positive ROI beats keeping cash in a low-yield account.
What is annualized ROI?
It normalizes ROI across different time periods for fair comparison. A 50% return over 5 years is ~8.4% annualized (CAGR).
More Finance & Calculators Tools
Explore other tools in this category
Explore Other Categories
Discover tools across different categories
ROI Calculator is part of our Finance & Calculators tools collection at AllInAOne. Use our free online tools for all your finance & calculators needs — no registration required.