Betting ROI Calculator
Track your sports betting return on investment. The most important metric for measuring betting success.
Your Performance Dashboard
Total ROI
0.00%
Net Profit
$0.00
Win Rate
0%
Record
0-0
Total Wagered
$0
Avg Bet Size
$0
Enter Your Betting Stats
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What Is Betting ROI?
Return on Investment (ROI) measures your betting efficiency—how much profit you generate relative to the amount you wager. It's the single most important metric for evaluating long-term betting performance.
📐 The ROI Formula
ROI = (Net Profit / Total Wagered) × 100
Example: $500 profit on $10,000 wagered = 5% ROI
Why ROI Beats Win Rate
A 60% win rate sounds great, but it means nothing without context. If you're betting -200 favorites, you need 67% just to break even. ROI accounts for both hit rate AND the odds, giving you the true picture.
ROI Benchmarks
| ROI Range | Level | Interpretation |
|---|---|---|
| < -5% | Poor | Significant losses—reassess strategy |
| -5% to 0% | Below Average | Slight losses, room to improve |
| 0% to 3% | Break Even | Beating the vig—solid foundation |
| 3% to 7% | Good | Consistent profit, sustainable |
| 7% to 10% | Excellent | Professional-level returns |
| > 10% | Elite | Top-tier (verify sample size!) |
⚠️ Sample Size Matters
You need 500-1000+ bets for statistically meaningful ROI. Under 100 bets? Variance dominates.