ROI Betting Calculator
ROI from staked, returned and bet count.
How to Use This Calculator
- Input the total amount wagered (the sum of all stakes)
- Input the total amount returned (winning payouts, stakes included)
- (Optional) Input the number of bets placed for per-bet metrics
- Read profit, ROI %, and per-bet stats
Formula
Net Profit = Total Returned − Total Wagered
ROI = Net Profit / Total Wagered × 100%
Average Stake = Total Wagered / Number of Bets
Profit per Bet = Net Profit / Number of Bets
Sustained ROIs above 5-10% are typical of strong sports bettors over 1000+ bets; anything above 20% on a small sample is usually variance, not skill.
Frequently Asked Questions
What ROI counts as good in sports betting?
Professional bettors generally target a long-run ROI of 5-10%. Anything above 3% across a large sample (5000+ bets) is exceptional. Sharps often run thinner (2-3%) on heavy volume; recreational winners land at 5-15% on smaller volume but with more variance.
Is ROI the same as yield?
Yield is just another label for ROI in betting. Both express profit as a percentage of total wagered. The terms are interchangeable — yield is favoured in horse racing and European betting, ROI in US sports betting and matched betting.
Why is sample size so important?
Short-run ROI is governed by variance, not skill. A 20% ROI over 50 bets is near meaningless — random variance produces it easily. Separating skill from luck typically takes 1000+ bets at consistent staking and odds before ROI reflects your true edge.
Should ROI be tracked by sport, market, or bet type?
Yes — break out each segment. A single total ROI can mask the fact that you profit on NHL totals while bleeding on NBA spreads. Granular tracking underpins any improvement loop in long-term betting.