Sample Size Calculator
Calculate how many bets you need to determine if your edge is real with statistical confidence. Understand the sample sizes required to distinguish skill from luck.
Why Sample Size Matters in Betting
Sports betting has high variance. Even skilled bettors experience long losing streaks, and lucky bettors can win for extended periods. Sample size tells you how many bets you need before you can trust that your results reflect actual skill.
The smaller your edge, the more bets you need. A 1% edge requires thousands of bets to confirm statistically. A 5% edge can be detected in hundreds of bets.
This is why professional bettors and betting syndicates place thousands of bets per year - they need volume to smooth out variance and let their edge compound reliably.
This calculator is for informational and educational purposes only. Results should be verified with your sportsbook before placing any wagers. All betting carries risk. Full Disclaimer
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Responsible Gambling
Gambling should be entertaining, not a way to make money. Only bet what you can afford to lose, and never chase your losses.
- Betting more than you can afford to lose
- Chasing losses with bigger bets
- Lying to others about gambling habits