-555 Odds Explained
- Decimal
- 1.18
- American
- -555
- Fractional
- 11/61
- Implied probability
- 84.73%
- Polymarket
- 85¢
- $100 wins
- 18.02
- The fraction shown is the closest simple fraction to the odds rounded to 3 decimals, not an exact match.
- American
- -555
- Fractional
- 11/61
- Implied probability
- 84.73%
- Polymarket
- 85¢
- Profit
- 18.02
- Total return
- 118.02
1.180 decimal, -555 American, 84.73% implied probability
The price -555 converts to 1.18 decimal odds and 11/61 fractional odds. Read as a probability it says the bookmaker prices this outcome at 84.73%, 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 85¢.
What -555 pays
A 100 stake at -555 returns 118.02 in total: your 100 back plus 18.02 profit. To win exactly 100 you would stake 555.00. The table covers the stakes people actually use.
| Stake | Profit | Total return |
|---|---|---|
| 10 | 1.80 | 11.80 |
| 25 | 4.50 | 29.50 |
| 50 | 9.01 | 59.01 |
| 100 | 18.02 | 118.02 |
| 500 | 90.09 | 590.09 |
| 1,000 | 180.18 | 1,180.18 |
Break-even and long-run results
The implied probability of -555 is 84.73%, and that number is also the break-even win rate: win more often than 84.73% 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% | -41.0% |
| 55% | -35.1% |
| 60% | -29.2% |
| 65% | -23.3% |
| 85% | 0.3% |
At 84.73% this is a heavy favourite. Prices this short appear when one side is expected to win comfortably: a top seed against a qualifier, a strong home team against a relegation candidate, or a moneyline in a game with a double-digit spread. The catch is the payout. You need to win more than 84.73% of these bets just to stand still, and one loss wipes out several wins.
The vig at -555
If both sides of a two-way market were priced at -555, the implied probabilities would add up to 69.47% above 100%. That excess is the overround, or vig; as a share of stakes it is a 40.99% 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.
-555 on a betting exchange
Exchanges charge commission on net winnings, so the price you see is not the price you get. At 2% commission -555 is worth 1.177 decimal (-566 American); at 5% it drops to 1.171 (-584). Those are the bookmaker prices you would need to beat.
| Commission | Effective decimal | Effective American | Break-even |
|---|---|---|---|
| 2% | 1.177 | -566 | 84.99% |
| 5% | 1.171 | -584 | 85.38% |
Same price in other formats
Nearby prices
Nearby prices
Frequently asked questions
What does -555 mean in betting?
-555 is an American price. Positive numbers show the profit on a 100 stake; negative numbers show the stake needed to win 100. At -555 the implied probability is 84.73% and a 100 stake returns 118.02.
What is -555 in decimal odds?
-555 converts to 1.180 in decimal odds (usually shown as 1.18). Decimal odds are the total return per unit staked, so multiply your stake by 1.180 to get the return.
What is -555 as a fraction?
-555 is 11/61 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 -555?
A 100 stake at -555 wins 18.02 in profit and returns 118.02 including the stake. To win exactly 100 you would stake 555.00.
What win rate do I need at -555?
The break-even win rate equals the implied probability, 84.73%. Winning more often than that at this price is profitable over the long run; winning less often loses money.