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ROI Calculator – Return on Investment & Annualised Return

Return on Investment (ROI) is the universal metric for evaluating whether any investment — stocks, real estate, a business project, advertising spend, or training — generated more value than it cost. Expressed as a percentage, it makes opportunities of very different sizes directly comparable.

This calculator computes simple ROI from initial cost and final return, net profit, and (if you enter a time period) the annualised ROI (CAGR) — the equivalent constant annual return that would produce the same total result. All three metrics together give a complete picture of investment performance.

How to use the Roi Calculator

  1. Enter the initial investment cost.
  2. Enter the final value or net profit.
  3. Optionally enter the investment period in years.
  4. View simple ROI %, net profit/loss, and annualised ROI (CAGR).
ROI Examples with Annualised Return
InvestmentCostFinal ValueSimple ROIPeriodAnnualised ROI (CAGR)
Stocks$10,000$18,00080%5 yrs12.5%
Real estate$50,000$65,00030%4 yrs6.8%
Business project$20,000$28,00040%2 yrs18.3%
Marketing campaign$5,000$7,50050%1 yr50%

Roi Calculator FAQ

What is a good ROI?
It depends on the investment type and risk level. Stock market index funds have historically returned ~10% annually (simple, risky). Real estate targets 8–15%. Safe bonds: 3–5%. A business investment returning 20%+ is typically considered strong. Always compare against the relevant risk-adjusted benchmark.
What is CAGR and why is it better than simple ROI for multi-year investments?
CAGR (Compound Annual Growth Rate) is the constant annual return that would produce the same total result. It accounts for compounding and makes multi-year investments fairly comparable. Simple ROI doesn't account for time — a 100% return over 10 years is very different from 100% in 1 year.
How do I calculate ROI for a rental property?
Cash-on-cash ROI = annual net cash flow ÷ total cash invested × 100. Total return includes appreciation, equity paydown, and tax benefits. Cap rate = net operating income ÷ property value (ignores financing).
Does ROI account for risk?
No. A 20% ROI from a speculative venture is less valuable than 15% from a stable asset, because the speculative return has higher variance and probability of loss. Risk-adjusted measures like the Sharpe ratio give a fuller picture.