+105 Odds Explained
- Decimal
- 2.05
- American
- +105
- Fractional
- 21/20
- Implied probability
- 48.78%
- Polymarket
- 49¢
- $100 wins
- 105.00
- American
- +105
- Fractional
- 21/20
- Implied probability
- 48.78%
- Polymarket
- 49¢
- Profit
- 105.00
- Total return
- 205.00
2.050 decimal, +105 American, 48.78% implied probability
+105 is an American price:
the plus sign marks an underdog, and the number is the profit on a 100 stake
. Every other format describes the same chance: 2.05 decimal, 21/20 fractional, 48.78% implied probability, 49¢ on Polymarket.
What +105 pays
A 100 stake at +105 returns 205.00 in total: your 100 back plus 105.00 profit. To win exactly 100 you would stake 95.24. The table covers the stakes people actually use.
| Stake | Profit | Total return |
|---|---|---|
| 10 | 10.50 | 20.50 |
| 25 | 26.25 | 51.25 |
| 50 | 52.50 | 102.50 |
| 100 | 105.00 | 205.00 |
| 500 | 525.00 | 1,025.00 |
| 1,000 | 1,050.00 | 2,050.00 |
Break-even and long-run results
The implied probability of +105 is 48.78%, and that number is also the break-even win rate: win more often than 48.78% 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 |
|---|---|
| 49% | 0.4% |
| 50% | 2.5% |
| 55% | 12.7% |
| 60% | 23.0% |
| 65% | 33.2% |
An implied probability of 48.78% makes +105 a near-even price. This is the natural home of handicap and over/under markets, where the bookmaker adjusts the line rather than the price and both sides are quoted a shade under 2.00 decimal.
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 -2.50% 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 2.029 decimal (+103 American); at 5% it drops to 1.997 (-100). Those are the bookmaker prices you would need to beat.
| Commission | Effective decimal | Effective American | Break-even |
|---|---|---|---|
| 2% | 2.029 | +103 | 49.29% |
| 5% | 1.997 | -100 | 50.06% |
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 48.78% and a 100 stake returns 205.00.
What is +105 in decimal odds?
+105 converts to 2.050 in decimal odds (usually shown as 2.05). Decimal odds are the total return per unit staked, so multiply your stake by 2.050 to get the return.
What is +105 as a fraction?
+105 is 21/20 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 105.00 in profit and returns 205.00 including the stake. To win exactly 100 you would stake 95.24.
What win rate do I need at +105?
The break-even win rate equals the implied probability, 48.78%. Winning more often than that at this price is profitable over the long run; winning less often loses money.