ROI Calculator 2026
Free ROI calculator. Calculate return on investment for any business expenditure, marketing campaign, or investment. Simple percentage + annualized ROI.
ROI Benchmarks by Investment Type
| Investment Type | Average Annual ROI | Risk Level |
|---|---|---|
| S&P 500 Index Fund | 10-12% | Medium |
| Real Estate (Rental) | 8-12% | Medium |
| Small Business | 15-30% | High |
| Google Ads Campaign | 200-800% | Medium |
| Email Marketing | 3,600% avg | Low |
| SEO | 500-1,300% | Low-Medium |
| Employee Training | 150-400% | Low |
Formula: ROI = (Net Profit ÷ Cost of Investment) × 100
Example: You spend $5,000 on Google Ads and generate $25,000 in sales with $15,000 in costs. Net profit = $5,000. ROI = ($5,000 ÷ $5,000) × 100 = 100% ROI