-191 Odds Explained
- Decimal
- 1.52
- American
- -191
- Fractional
- 11/21
- Implied probability
- 65.64%
- Polymarket
- 66¢
- $100 wins
- 52.36
- The fraction shown is the closest simple fraction to the odds rounded to 3 decimals, not an exact match.
- American
- -191
- Fractional
- 11/21
- Implied probability
- 65.64%
- Polymarket
- 66¢
- Profit
- 52.36
- Total return
- 152.36
1.524 decimal, -191 American, 65.64% implied probability
The price -191 converts to 1.52 decimal odds and 11/21 fractional odds. Read as a probability it says the bookmaker prices this outcome at 65.64%, 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 66¢.
What -191 pays
A 100 stake at -191 returns 152.36 in total: your 100 back plus 52.36 profit. To win exactly 100 you would stake 191.00. The table covers the stakes people actually use.
| Stake | Profit | Total return |
|---|---|---|
| 10 | 5.24 | 15.24 |
| 25 | 13.09 | 38.09 |
| 50 | 26.18 | 76.18 |
| 100 | 52.36 | 152.36 |
| 500 | 261.78 | 761.78 |
| 1,000 | 523.56 | 1,523.56 |
Break-even and long-run results
The implied probability of -191 is 65.64%, and that number is also the break-even win rate: win more often than 65.64% 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% | -23.8% |
| 55% | -16.2% |
| 60% | -8.6% |
| 65% | -1.0% |
| 66% | 0.6% |
With an implied probability of 65.64%, -191 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 -191
If both sides of a two-way market were priced at -191, the implied probabilities would add up to 31.27% above 100%. That excess is the overround, or vig; as a share of stakes it is a 23.82% 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.
-191 on a betting exchange
Exchanges charge commission on net winnings, so the price you see is not the price you get. At 2% commission -191 is worth 1.513 decimal (-195 American); at 5% it drops to 1.497 (-201). Those are the bookmaker prices you would need to beat.
| Commission | Effective decimal | Effective American | Break-even |
|---|---|---|---|
| 2% | 1.513 | -195 | 66.09% |
| 5% | 1.497 | -201 | 66.78% |
Same price in other formats
Same price in other formats
Nearby prices
Nearby prices
Frequently asked questions
What does -191 mean in betting?
-191 is an American price. Positive numbers show the profit on a 100 stake; negative numbers show the stake needed to win 100. At -191 the implied probability is 65.64% and a 100 stake returns 152.36.
What is -191 in decimal odds?
-191 converts to 1.524 in decimal odds (usually shown as 1.52). Decimal odds are the total return per unit staked, so multiply your stake by 1.524 to get the return.
What is -191 as a fraction?
-191 is 11/21 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 -191?
A 100 stake at -191 wins 52.36 in profit and returns 152.36 including the stake. To win exactly 100 you would stake 191.00.
What win rate do I need at -191?
The break-even win rate equals the implied probability, 65.64%. Winning more often than that at this price is profitable over the long run; winning less often loses money.