-388 Odds Explained
- Decimal
- 1.26
- American
- -388
- Fractional
- 25/97
- Implied probability
- 79.51%
- Polymarket
- 80¢
- $100 wins
- 25.77
- American
- -388
- Fractional
- 25/97
- Implied probability
- 79.51%
- Polymarket
- 80¢
- Profit
- 25.77
- Total return
- 125.77
1.258 decimal, -388 American, 79.51% implied probability
-388 is an American price:
the minus sign marks a favourite, and the number is the stake needed to win 100
. Every other format describes the same chance: 1.26 decimal, 25/97 fractional, 79.51% implied probability, 80¢ on Polymarket.
What -388 pays
A 100 stake at -388 returns 125.77 in total: your 100 back plus 25.77 profit. To win exactly 100 you would stake 388.00. The table covers the stakes people actually use.
| Stake | Profit | Total return |
|---|---|---|
| 10 | 2.58 | 12.58 |
| 25 | 6.44 | 31.44 |
| 50 | 12.89 | 62.89 |
| 100 | 25.77 | 125.77 |
| 500 | 128.87 | 628.87 |
| 1,000 | 257.73 | 1,257.73 |
Break-even and long-run results
The implied probability of -388 is 79.51%, and that number is also the break-even win rate: win more often than 79.51% 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% | -37.1% |
| 55% | -30.8% |
| 60% | -24.5% |
| 65% | -18.2% |
| 80% | 0.6% |
At 79.51% 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 79.51% of these bets just to stand still, and one loss wipes out several wins.
The vig at -388
If both sides of a two-way market were priced at -388, the implied probabilities would add up to 59.02% above 100%. That excess is the overround, or vig; as a share of stakes it is a 37.11% 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.
-388 on a betting exchange
Exchanges charge commission on net winnings, so the price you see is not the price you get. At 2% commission -388 is worth 1.253 decimal (-396 American); at 5% it drops to 1.245 (-408). Those are the bookmaker prices you would need to beat.
| Commission | Effective decimal | Effective American | Break-even |
|---|---|---|---|
| 2% | 1.253 | -396 | 79.84% |
| 5% | 1.245 | -408 | 80.33% |
Same price in other formats
Same price in other formats
Nearby prices
Nearby prices
Frequently asked questions
What does -388 mean in betting?
-388 is an American price. Positive numbers show the profit on a 100 stake; negative numbers show the stake needed to win 100. At -388 the implied probability is 79.51% and a 100 stake returns 125.77.
What is -388 in decimal odds?
-388 converts to 1.258 in decimal odds (usually shown as 1.26). Decimal odds are the total return per unit staked, so multiply your stake by 1.258 to get the return.
What is -388 as a fraction?
-388 is 25/97 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 -388?
A 100 stake at -388 wins 25.77 in profit and returns 125.77 including the stake. To win exactly 100 you would stake 388.00.
What win rate do I need at -388?
The break-even win rate equals the implied probability, 79.51%. Winning more often than that at this price is profitable over the long run; winning less often loses money.