ROI Calculator

ROI (Return on Investment) is calculated as: (Final Value - Initial Investment) / Initial Investment x 100. If you invested $10,000 and it grew to $15,000, your ROI is ($15,000 - $10,000) / $10,000 x 100 = 50%. This gives you a simple percentage that shows how much you gained or lost relative to your initial investment.

Annualized ROI adjusts the return to a per-year basis using the formula: (Final/Initial)^(1/years) - 1. A 50% ROI over 5 years is very different from 50% in 1 year. Annualized ROI lets you compare investments with different time horizons on an apples-to-apples basis. This calculator computes it automatically when you enter a time period.

ROAS (Return on Ad Spend) is Revenue divided by Ad Spend. A ROAS of 3x means you earned 3 pounds for every 1 pound spent on ads. Marketing ROI accounts for cost of goods sold: (Gross Profit - Ad Spend) / Ad Spend x 100. ROAS measures revenue efficiency while Marketing ROI measures actual profit efficiency.

Yes. Click Add Investment to compare up to 3 investments side by side. Each investment gets its own input panel where you can enter different initial amounts, final values, and time periods. The comparison table at the bottom shows ROI, annualized ROI, and profit/loss for each investment for easy decision making.

The calculator supports GBP (British Pounds), USD (US Dollars), EUR (Euros), AUD (Australian Dollars), and INR (Indian Rupees). The currency selector changes the symbol displayed throughout the calculator. All calculations work identically regardless of currency since ROI is a percentage-based measure.