ROI (Return on Investment) Calculator
Guide
ROI Calculator
Calculate return on investment instantly. Enter your initial investment and final value to see ROI percentage, annualized returns (CAGR), break-even timeline, and compare up to three investment scenarios side by side. All calculations update in real-time as you type.
How to Use
Enter your initial investment amount and either the final value or net profit. Set the investment period and see your ROI percentage instantly. Use the CAGR section for multi-year annualized returns with a year-by-year growth table. The break-even calculator shows how long until your investment pays for itself. Compare up to three investments side by side to find the best option.
Features
- Basic ROI Calculator — Enter initial investment and final value or net gain. See ROI percentage, net profit/loss, and total return instantly. Toggle between final value and net profit input modes.
- Annualized ROI (CAGR) — Calculate Compound Annual Growth Rate for multi-year investments. See year-by-year growth table showing the value at the end of each year.
- Break-Even Analysis — Enter your investment and expected return rate to find how many months or years until you break even. Shows monthly progression toward the break-even point.
- Investment Comparison — Compare up to 3 investment scenarios side by side with ROI %, annualized ROI, and net returns. The best performer is highlighted automatically.
- Flexible Time Periods — Set investment duration in days, months, or years. Annualized ROI is calculated automatically for periods longer than one year.
- Currency Agnostic — Works with any currency. Large numbers are formatted with commas for readability.
ROI Formulas
- Basic ROI: ROI (%) = (Net Profit / Initial Investment) × 100
- CAGR: CAGR = (Final Value / Initial Value)^(1/Years) − 1
- Break-Even: Months = ln(2) / ln(1 + monthly rate) for doubling, or Investment / Monthly Return for simple payback
FAQ
-
What is ROI?
ROI (Return on Investment) measures the profitability of an investment as a percentage. It's calculated by dividing the net profit by the initial investment cost and multiplying by 100. For example, if you invest $10,000 and it grows to $13,000, your net profit is $3,000 and your ROI is 30%. ROI is the most widely used metric for evaluating investment performance because it's simple, universal, and allows direct comparison between different investments regardless of size.
-
What is CAGR and how does it differ from ROI?
CAGR (Compound Annual Growth Rate) is the annualized rate of return that smooths out an investment's performance over multiple years. While basic ROI tells you the total return (e.g., 50% over 3 years), CAGR tells you the equivalent annual growth rate (e.g., 14.47% per year). CAGR is more useful for comparing investments with different time horizons. The formula is: CAGR = (Final Value / Initial Value)^(1/Years) − 1. A 50% total return over 3 years equals a 14.47% CAGR, not 16.67% (50÷3), because returns compound.
-
What is a good ROI?
A 'good' ROI depends entirely on context. The S&P 500 stock index has historically returned about 10% annually (7% after inflation). Real estate typically returns 8-12% annually including appreciation and rental income. Savings accounts offer 1-5% depending on rates. Venture capital targets 25%+ but with much higher risk. Any investment returning above the risk-free rate (government bonds, roughly 4-5%) is generating positive real returns. Always compare ROI against the risk level — higher returns usually mean higher risk.
-
How do I calculate break-even on an investment?
Break-even is the point where your cumulative returns equal your initial investment — you've recovered your cost and any further returns are pure profit. For a simple payback calculation: divide the initial investment by the expected periodic return. For compound returns: use the formula months = ln(Investment / Current Value) / ln(1 + monthly rate). For example, a $10,000 investment returning 2% monthly breaks even in about 0 months if starting from $10,000 (already at value), but a $10,000 investment that initially drops to $8,000 and returns 2% monthly takes about 11.2 months to recover.
Install Our Extensions
Add IO tools to your favorite browser for instant access and faster searching
恵 Scoreboard Has Arrived!
Scoreboard is a fun way to keep track of your games, all data is stored in your browser. More features are coming soon!
Must-Try Tools
View All New Arrivals
View AllUpdate: Our latest tool was added on Mar 31, 2026
