Straight Bet Checker
Enter a price and a stake to see what the bet pays and how often it would need to win to break even. Add the other side's price to see the market with the margin removed.
Your bet
Example pricesResults
- Total payout
- $190.91
- Stake plus profit, if it wins
- Net profit if won
- $90.91
- Break-even win rate
- 52.38%
- Decimal odds
- 1.909
- American odds
- −110
- Implied probability
- 52.38%
- From this price, margin included
- Loss if lost
- $100.00
What has to happen to break even
At −110 (decimal 1.909), a win returns $190.91 and a loss costs $100.00. Bets at this price need to win 52.38% of the time to break even over the long run.
Learn: Break-even probability
Break-even probability is 1 ÷ decimal odds. If a price wins at exactly that rate, the wins pay for the losses and you end up level over many bets.
It describes the price, not the bet. Whether the real chance of winning is above or below it is the question the price alone can't answer.
Illustrative example · At −110 you win $90.91 on a $100 stake and lose $100 when you lose, so you need to win 52.38% of the time to break even.
Implied probability is not the real chance
52.38% is the probability implied by this one price, including the sportsbook's margin. It is not a fair probability and not the true chance of winning, which this checker does not estimate.
Learn: Sportsbook margin (vig)
Sportsbooks build a margin into prices. Convert both sides of a market to implied probabilities and they add up to more than 100%. The excess is the overround, often called vig or juice.
Margins vary by book, sport and market. Props and parlays often carry more margin than main lines.
Illustrative example · −110 on both sides implies 52.38% + 52.38% = 104.76%. The extra 4.76 points is the book's margin.
Payout is not value
Profit of $90.91 on $100.00 is only worthwhile if the real chance of winning is above 52.38%. A price can't tell you that on its own.
Learn: Expected value vs. payout
Expected value (EV) depends on the true chance of winning, which nobody can read off a price. EV per bet = chance of winning × profit − chance of losing × stake.
A long price pays more because it is expected to win less often. A payout that looks attractive tells you nothing about EV unless you have a reliable reason to believe the true chance is higher than the break-even rate.
This checker does not estimate true probabilities and does not tell you whether to bet.
Illustrative example · +300 pays $300.00 profit on a $100 stake and breaks even at 25.00%. If the true chance were 20%, the EV would be 0.20 × $300.00 − 0.80 × $100.00 = −$20.00 per bet.
If it pushes
A push usually returns your $100.00 stake with no profit. Check your sportsbook's rules for this market.
Learn: Pushes and voids
A push (the result lands exactly on the line) or a void (for example, a player who doesn't play) usually removes that leg, and the parlay is paid on the remaining legs. A straight bet that pushes usually returns the stake.
Rules differ by sportsbook, sport and bet type. Some books void a whole same-game parlay, some reprice boosted parlays differently, and some settle player props on whether the player started. Check your book's house rules.
Illustrative example · Three −110 legs with a $10 stake pay $69.58. If one leg pushes, standard repricing pays the remaining two-leg parlay: $36.45.