-330 Odds Explained
- Decimal
- 1.30
- American
- -330
- Fractional
- 10/33
- Implied probability
- 76.74%
- Polymarket
- 77¢
- $100 wins
- 30.30
- American
- -330
- Fractional
- 10/33
- Implied probability
- 76.74%
- Polymarket
- 77¢
- Profit
- 30.30
- Total return
- 130.30
1.303 decimal, -330 American, 76.74% implied probability
-330 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: 1.30 decimal, 10/33 fractional, 76.74% implied probability, 77¢ on Polymarket.
What -330 pays
A 100 stake at -330 returns 130.30 in total: your 100 back plus 30.30 profit. To win exactly 100 you would stake 330.00. The table covers the stakes people actually use.
| Stake | Profit | Total return |
|---|---|---|
| 10 | 3.03 | 13.03 |
| 25 | 7.58 | 32.58 |
| 50 | 15.15 | 65.15 |
| 100 | 30.30 | 130.30 |
| 500 | 151.52 | 651.52 |
| 1,000 | 303.03 | 1,303.03 |
Break-even and long-run results
The implied probability of -330 is 76.74%, and that number is also the break-even win rate: win more often than 76.74% 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% | -34.8% |
| 55% | -28.3% |
| 60% | -21.8% |
| 65% | -15.3% |
| 77% | 0.3% |
A price of -330 is deep odds-on. Bookmakers quote it when an outcome is close to a formality, and the margin they take is proportionally large at this end of the market. Sharp bettors tend to look at the other side of such a market, or at the exchange, where the same favourite is often available a tick or two better.
The vig at -330
If both sides of a two-way market were priced at -330, the implied probabilities would add up to 53.49% above 100%. That excess is the overround, or vig; as a share of stakes it is a 34.85% 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.
-330 on a betting exchange
Exchanges charge commission on net winnings, so the price you see is not the price you get. At 2% commission -330 is worth 1.297 decimal (-337 American); at 5% it drops to 1.288 (-347). Those are the bookmaker prices you would need to beat.
| Commission | Effective decimal | Effective American | Break-even |
|---|---|---|---|
| 2% | 1.297 | -337 | 77.10% |
| 5% | 1.288 | -347 | 77.65% |
Same price in other formats
Nearby prices
Nearby prices
Frequently asked questions
What does -330 mean in betting?
-330 is an American price. Positive numbers show the profit on a 100 stake; negative numbers show the stake needed to win 100. At -330 the implied probability is 76.74% and a 100 stake returns 130.30.
What is -330 in decimal odds?
-330 converts to 1.303 in decimal odds (usually shown as 1.30). Decimal odds are the total return per unit staked, so multiply your stake by 1.303 to get the return.
What is -330 as a fraction?
-330 is 10/33 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 -330?
A 100 stake at -330 wins 30.30 in profit and returns 130.30 including the stake. To win exactly 100 you would stake 330.00.
What win rate do I need at -330?
The break-even win rate equals the implied probability, 76.74%. Winning more often than that at this price is profitable over the long run; winning less often loses money.