-180 Odds Explained
- Decimal
- 1.56
- American
- -180
- Fractional
- 5/9
- Implied probability
- 64.29%
- Polymarket
- 64¢
- $100 wins
- 55.56
- American
- -180
- Fractional
- 5/9
- Implied probability
- 64.29%
- Polymarket
- 64¢
- Profit
- 55.56
- Total return
- 155.56
1.556 decimal, -180 American, 64.29% implied probability
The price -180 converts to 1.56 decimal odds and 5/9 fractional odds. Read as a probability it says the bookmaker prices this outcome at 64.29%, which is the share of the time you would need to win just to break even. A prediction market would quote the same chance as 64¢.
What -180 pays
A 100 stake at -180 returns 155.56 in total: your 100 back plus 55.56 profit. To win exactly 100 you would stake 180.00. The table covers the stakes people actually use.
| Stake | Profit | Total return |
|---|---|---|
| 10 | 5.56 | 15.56 |
| 25 | 13.89 | 38.89 |
| 50 | 27.78 | 77.78 |
| 100 | 55.56 | 155.56 |
| 500 | 277.78 | 777.78 |
| 1,000 | 555.56 | 1,555.56 |
Break-even and long-run results
The implied probability of -180 is 64.29%, and that number is also the break-even win rate: win more often than 64.29% of the time at this price and you profit in the long run, win less often and you lose. The table shows the return on stake at a few win rates, including the break-even rate itself.
| Win rate | Return on stake |
|---|---|
| 50% | -22.2% |
| 55% | -14.4% |
| 60% | -6.7% |
| 64% | -0.4% |
| 65% | 1.1% |
With an implied probability of 64.29%, -180 is a moderate favourite. Prices in this band are where the bookmaker's margin is easiest to see: the opposite side of the market is usually priced a little longer than the fair line, and the two implied probabilities add up to more than 100%.
The vig at -180
If both sides of a two-way market were priced at -180, the implied probabilities would add up to 28.57% above 100%. That excess is the overround, or vig; as a share of stakes it is a 22.22% margin for the bookmaker. Removing it leaves fair odds of 2.00 decimal ( +100) on each side. Use the devig calculator to do the same for any market.
-180 on a betting exchange
Exchanges charge commission on net winnings, so the price you see is not the price you get. At 2% commission -180 is worth 1.544 decimal (-184 American); at 5% it drops to 1.528 (-189). Those are the bookmaker prices you would need to beat.
| Commission | Effective decimal | Effective American | Break-even |
|---|---|---|---|
| 2% | 1.544 | -184 | 64.75% |
| 5% | 1.528 | -189 | 65.45% |
Same price in other formats
Nearby prices
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Frequently asked questions
What does -180 mean in betting?
-180 is an American price. Positive numbers show the profit on a 100 stake; negative numbers show the stake needed to win 100. At -180 the implied probability is 64.29% and a 100 stake returns 155.56.
What is -180 in decimal odds?
-180 converts to 1.556 in decimal odds (usually shown as 1.56). Decimal odds are the total return per unit staked, so multiply your stake by 1.556 to get the return.
What is -180 as a fraction?
-180 is 5/9 in fractional odds, the traditional bookmaker notation where the top number is profit and the bottom number is stake.
How much do I win on a 100 bet at -180?
A 100 stake at -180 wins 55.56 in profit and returns 155.56 including the stake. To win exactly 100 you would stake 180.00.
What win rate do I need at -180?
The break-even win rate equals the implied probability, 64.29%. Winning more often than that at this price is profitable over the long run; winning less often loses money.