−340 odds: what they mean and what they pay
At −340 you bet $340 to win $100 in profit, $440 back in all. The price implies a 77.27% chance, so you need to win more than 77.27% of these bets to come out ahead.
The same price in every format
| American | −340 |
|---|---|
| Decimal | 1.294 |
| Fractional | 5/17 |
| Implied chance | 77.27% |
| Break-even win rate | 77.27% |
What −340 pays
| Bet | Profit if it wins | Total back |
|---|---|---|
| $10 | $2.94 | $12.94 |
| $25 | $7.35 | $32.35 |
| $50 | $14.71 | $64.71 |
| $100 | $29.41 | $129.41 |
| $250 | $73.53 | $323.53 |
| $1,000 | $294.12 | $1,294.12 |
Is −340 good odds?
It depends on how likely the bet is to win, not on the number itself. −340 is a good price on a side that wins more than 77.27% of the time and a bad one on a side that wins less. If a market kept nothing, the other side of a −340 bet would be +340; real books price it worse than that, and the gap is their cut. At −110 on both sides, the most common spread and total price, the cut is 4.76%. Which book keeps the least differs: every sportsbook's cut, measured.
As a price, −340 makes the side a heavy favorite.
What a better price is worth
Find −330 instead of −340 on the same bet and the win rate you need drops from 77.27% to 76.74%. Over 100 bets of $100 that win 77.27% of the time, −340 breaks even and −330 comes out about $68.87 ahead: the same picks, a better price. Books often differ by that much on the same game: the board shows which one pays the most.
−340 in a parlay
Two legs at −340 combine to decimal 1.675 (about −148): $100 would return $167.47. Each leg's cut compounds, so a parlay keeps more for the book than a single bet. Parlay calculator.
Questions
What does -340 mean in betting?
-340 means you bet $340 to win $100 in profit, returning $440 in all.
How much do I win on a $100 bet at -340?
$29.41 profit, $129.41 back in all if it wins.
What is -340 as a percentage?
-340 implies a 77.27% chance. That's also the share of bets you'd need to win to break even.
What is -340 in decimal odds?
1.294. In fractional odds it's about 5/17.
Is -340 a good bet?
Only if the side wins more than 77.27% of the time. The price alone can't tell you: compare it with other sportsbooks' prices on the same bet, since a better price lowers the win rate you need.