-151 Odds Explained
- Decimal
- 1.66
- American
- -151
- Fractional
- 51/77
- Implied probability
- 60.16%
- Polymarket
- 60¢
- $100 wins
- 66.23
- The fraction shown is the closest simple fraction to the odds rounded to 3 decimals, not an exact match.
- American
- -151
- Fractional
- 51/77
- Implied probability
- 60.16%
- Polymarket
- 60¢
- Profit
- 66.23
- Total return
- 166.23
1.662 decimal, -151 American, 60.16% implied probability
The price -151 converts to 1.66 decimal odds and 51/77 fractional odds. Read as a probability it says the bookmaker prices this outcome at 60.16%, 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 60¢.
What -151 pays
A 100 stake at -151 returns 166.23 in total: your 100 back plus 66.23 profit. To win exactly 100 you would stake 151.00. The table covers the stakes people actually use.
| Stake | Profit | Total return |
|---|---|---|
| 10 | 6.62 | 16.62 |
| 25 | 16.56 | 41.56 |
| 50 | 33.11 | 83.11 |
| 100 | 66.23 | 166.23 |
| 500 | 331.13 | 831.13 |
| 1,000 | 662.25 | 1,662.25 |
Break-even and long-run results
The implied probability of -151 is 60.16%, and that number is also the break-even win rate: win more often than 60.16% 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% | -16.9% |
| 55% | -8.6% |
| 60% | -0.3% |
| 65% | 8.0% |
With an implied probability of 60.16%, -151 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 -151
If both sides of a two-way market were priced at -151, the implied probabilities would add up to 20.32% above 100%. That excess is the overround, or vig; as a share of stakes it is a 16.89% 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.
-151 on a betting exchange
Exchanges charge commission on net winnings, so the price you see is not the price you get. At 2% commission -151 is worth 1.649 decimal (-154 American); at 5% it drops to 1.629 (-159). Those are the bookmaker prices you would need to beat.
| Commission | Effective decimal | Effective American | Break-even |
|---|---|---|---|
| 2% | 1.649 | -154 | 60.64% |
| 5% | 1.629 | -159 | 61.38% |
Same price in other formats
Nearby prices
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Frequently asked questions
What does -151 mean in betting?
-151 is an American price. Positive numbers show the profit on a 100 stake; negative numbers show the stake needed to win 100. At -151 the implied probability is 60.16% and a 100 stake returns 166.23.
What is -151 in decimal odds?
-151 converts to 1.662 in decimal odds (usually shown as 1.66). Decimal odds are the total return per unit staked, so multiply your stake by 1.662 to get the return.
What is -151 as a fraction?
-151 is 51/77 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 -151?
A 100 stake at -151 wins 66.23 in profit and returns 166.23 including the stake. To win exactly 100 you would stake 151.00.
What win rate do I need at -151?
The break-even win rate equals the implied probability, 60.16%. Winning more often than that at this price is profitable over the long run; winning less often loses money.