Win/Loss Calculator
Performance summary: win rate, ROI and profit per bet from your record.
How to Use This Calculator
- Input the total count of bets placed
- Input the count of bets settled as winners
- Input the aggregate amount staked across every bet
- Input the aggregate amount returned (inclusive of stakes on winning bets)
- Read out your win rate, net profit, ROI, and mean 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 qualifies as good in sports betting?
The required win rate is a function of your average odds. At -110, the break-even threshold sits at roughly 52.4%. At an average of +150, the figure drops to about 40%. Win rate in isolation is not a profitability signal — ROI is the more reliable metric.
How is ROI defined in betting?
Return on Investment (ROI) quantifies profit as a percentage of the total amount staked. A positive value indicates a profitable operation. Over an extended sample, professional bettors generally register ROI in the 2-10% band.
What sample size of bets yields meaningful data?
A statistically meaningful read typically requires a minimum of 500-1000 bets. Samples under 100 bets are dominated by variance and are not a dependable indicator of skill or edge.
What steps improve betting results?
Prioritize positive expected value (+EV) wagers, monitor your closing line value (CLV), concentrate on defined sports or markets, apply disciplined bankroll management, and systematically review your data to surface strengths and weaknesses.