Win/Loss Betting Calculator
Win rate, ROI and profit per bet.
How to Use This Calculator
- Input the total count of bets placed
- Input how many of those bets won
- Input the aggregate amount staked across every bet
- Input the aggregate amount returned (stakes on winning bets included)
- Read off win rate, net profit, ROI, and average profit per bet
Formula
Win Rate = (Wins / Total Bets) x 100
Net Profit = Total Returned - Total Staked
ROI = (Net Profit / Total Staked) x 100
Profit per Bet = Net Profit / Total Bets
Frequently Asked Questions
What win rate counts as good in sports betting?
It varies with average odds. At -110, the break-even threshold is roughly 52.4%. At an average of +150, about 40% suffices. Win rate by itself says nothing about profitability — ROI is the more reliable metric.
What does ROI mean in betting?
Return on Investment (ROI) expresses profit as a percentage of total stake. Positive ROI signals profitability. Long-term, professional bettors generally land in the 2-10% ROI range.
What sample size of bets is statistically meaningful?
Expect to need at least 500-1000 bets before results carry statistical weight. Anything under 100 bets is dominated by variance and is not a dependable signal of skill or edge.
What improves betting results?
Prioritize positive expected value (+EV) bets, monitor closing line value (CLV), specialize in particular sports or markets, keep bankroll management disciplined, and review your results continually to surface strengths and weaknesses.