-105 Odds Explained
- Decimal
- 1.95
- American
- -105
- Fractional
- 20/21
- Implied probability
- 51.22%
- Polymarket
- 51¢
- $100 wins
- 95.24
- American
- -105
- Fractional
- 20/21
- Implied probability
- 51.22%
- Polymarket
- 51¢
- Profit
- 95.24
- Total return
- 195.24
1.952 decimal, -105 American, 51.22% implied probability
-105 is reduced juice: the price some sportsbooks quote on spreads and totals instead of the standard -110. You risk 105 to win 100, the implied probability is 51.22%, and the margin on a -105 / -105 market is 2.38% instead of 4.55%.
The difference sounds small, but over a season of bets at a 53% win rate the -105 bettor roughly doubles the profit of the -110 bettor.
What -105 pays
A 100 stake at -105 returns 195.24 in total: your 100 back plus 95.24 profit. To win exactly 100 you would stake 105.00. The table covers the stakes people actually use.
| Stake | Profit | Total return |
|---|---|---|
| 10 | 9.52 | 19.52 |
| 25 | 23.81 | 48.81 |
| 50 | 47.62 | 97.62 |
| 100 | 95.24 | 195.24 |
| 500 | 476.19 | 976.19 |
| 1,000 | 952.38 | 1,952.38 |
Break-even and long-run results
The implied probability of -105 is 51.22%, and that number is also the break-even win rate: win more often than 51.22% 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% | -2.4% |
| 51% | -0.4% |
| 55% | 7.4% |
| 60% | 17.1% |
| 65% | 26.9% |
-105 sits close to even money. The bookmaker sees this as roughly a coin flip, with the margin nudging both sides of the market a little under fair. Point spreads and totals live here: the line moves to make each side about a 50% proposition, and the price carries the juice.
The vig at -105
If both sides of a two-way market were priced at -105, the implied probabilities would add up to 2.44% above 100%. That excess is the overround, or vig; as a share of stakes it is a 2.38% 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.
-105 on a betting exchange
Exchanges charge commission on net winnings, so the price you see is not the price you get. At 2% commission -105 is worth 1.933 decimal (-107 American); at 5% it drops to 1.905 (-111). Those are the bookmaker prices you would need to beat.
| Commission | Effective decimal | Effective American | Break-even |
|---|---|---|---|
| 2% | 1.933 | -107 | 51.72% |
| 5% | 1.905 | -111 | 52.50% |
Same price in other formats
Nearby prices
Nearby prices
Frequently asked questions
What does -105 mean in betting?
-105 is an American price. Positive numbers show the profit on a 100 stake; negative numbers show the stake needed to win 100. At -105 the implied probability is 51.22% and a 100 stake returns 195.24.
What is -105 in decimal odds?
-105 converts to 1.952 in decimal odds (usually shown as 1.95). Decimal odds are the total return per unit staked, so multiply your stake by 1.952 to get the return.
What is -105 as a fraction?
-105 is 20/21 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 -105?
A 100 stake at -105 wins 95.24 in profit and returns 195.24 including the stake. To win exactly 100 you would stake 105.00.
What win rate do I need at -105?
The break-even win rate equals the implied probability, 51.22%. Winning more often than that at this price is profitable over the long run; winning less often loses money.